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Morgan V

Dragon - Wikipedia, the free encyclopedia - 0 views

  • Dragons are legendary creatures, typically with serpentine or otherwise reptilian traits, that feature in the myths of worldwide cultures. The two most familiar interpretations of dragons are European dragons, derived from various European folk traditions, and the unrelated Oriental dragons, such as the Chinese dragon (lóng 龍 or 龙). The English word "dragon" derives from Greek δράκων (drákōn), "dragon, serpent of huge size, water-snake", which probably comes from the verb δρακεῖν (drakeîn) "to see clearly".
  • European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element.
  • European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element.
  • ...9 more annotations...
  • European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element.
  • European Main articles: European dragon and Saint George and the Dragon European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element. Chinese Main article: Chinese dragon Chinese dragons (simplified Chinese: 龙; traditional Chinese: 龍; pinyin: lóng), and Oriental dragons generally, can take on human form and are usually seen as benevolent, whereas European dragons are usually malevolent though there are exceptions (one exception being Y Ddraig Goch, the Red Dragon of Wales). Malevolent dragons also occur in the mythology of Persia (see Azhi Dahaka) and Russia, among other places. Dragons are particularly popular in China and the five-clawed dragon was a symbol of the Chinese emperors, with the phoenix or fenghuang the symbol of the Chinese empress. Dragon costumes manipulated by several people are a common sight at Chinese festivals. Japanese Main article: Japanese dragon Japanese dragon myths amalgamate native legends with imported stories about dragons from China, Korea and India. Like these other Asian dragons, most Japanese ones are water deities associated with rainfall and bodies of water, and are typically depicted as large, wingless, serpentine creatures with clawed feet. Gould writes (1896:248)[6], the Japanese dragon is "invariably figured as possessing three claws".
  • European Main articles: European dragon and Saint George and the Dragon European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element. Chinese Main article: Chinese dragon Chinese dragons (simplified Chinese: 龙; traditional Chinese: 龍; pinyin: lóng), and Oriental dragons generally, can take on human form and are usually seen as benevolent, whereas European dragons are usually malevolent though there are exceptions (one exception being Y Ddraig Goch, the Red Dragon of Wales). Malevolent dragons also occur in the mythology of Persia (see Azhi Dahaka) and Russia, among other places. Dragons are particularly popular in China and the five-clawed dragon was a symbol of the Chinese emperors, with the phoenix or fenghuang the symbol of the Chinese empress. Dragon costumes manipulated by several people are a common sight at Chinese festivals. Japanese Main article: Japanese dragon Japanese dragon myths amalgamate native legends with imported stories about dragons from China, Korea and India. Like these other Asian dragons, most Japanese ones are water deities associated with rainfall and bodies of water, and are typically depicted as large, wingless, serpentine creatures with clawed feet. Gould writes (1896:248)[6], the Japanese dragon is "invariably figured as possessing three claws".
  • European Main articles: European dragon and Saint George and the Dragon European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element.
  • European Main articles: European dragon and Saint George and the Dragon European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element.
  • European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element
  • Dragons are usually shown in modern times with a body like a huge lizard, or a snake with two pairs of lizard-type legs, and able to emit fire from their mouths. The European dragon has bat-type wings growing from its back. A dragon-like creature with no front legs is known as a wyvern. Following discovery of how pterosaurs walked on the ground, some dragons have been portrayed without front legs and using the wings as front legs pterosaur-fashion when on the ground, as in the movie Reign of Fire
  • Although dragons occur in many legends around the world, different cultures have varying stories about monsters that have been grouped together under the dragon label. Some dragons are said to breathe fire or to be poisonous. They are commonly portrayed as serpentine or reptilian, hatching from eggs and possessing typically scaly or feathered bodies. They are sometimes portrayed as having especially large eyes or watching treasure very diligently, a feature that is the origin of the word dragon (Greek drakeîn meaning "to see clearly").[3] Some myths portray them with a row of dorsal spines. European dragons are more often winged, while Oriental versions of the dragon resemble large snakes. Dragons can have a variable number of legs: none, two, four, or more when it comes to early European literature. Also, some dragons in Greek literature were known to have millions of legs at a time.[citation needed] Modern depictions of dragons tend to be larger than their original representations, which were often smaller than humans, but grew in the myths and tales of man over the years.[citation needed] Dragons are often held to have major spiritual significance in various religions and cultures around the world. In many Asian cultures dragons were, and in some cultures still are, revered as representative of the primal forces of nature, religion and the universe. They are associated with wisdom—often said to be wiser than humans—and longevity. They are commonly said to possess some form of magic or other supernatural power, and are often associated with wells, rain, and rivers. In some cultures, they are also said to be capable of human speech. The term dragoon, for infantry that moved around on horseback yet still fought as foot soldiers, is derived from their early firearm, the "dragon", a wide-bore musket that spat flame when it fired, and was thus named for the mythical creature.
  • Dragons are legendary creatures, typically with serpentine or otherwise reptilian traits, that feature in the myths of worldwide cultures.
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    European Main articles: European dragon and Saint George and the Dragon European dragons exist in folklore and mythology among the overlapping cultures of Europe. Despite having wings, the dragon is generally depicted as having an underground lair or cave, making it an ancient creature of the earth element. Chinese Main article: Chinese dragon Chinese dragons (simplified Chinese: 龙; traditional Chinese: 龍; pinyin: lóng), and Oriental dragons generally, can take on human form and are usually seen as benevolent, whereas European dragons are usually malevolent though there are exceptions (one exception being Y Ddraig Goch, the Red Dragon of Wales). Malevolent dragons also occur in the mythology of Persia (see Azhi Dahaka) and Russia, among other places. Dragons are particularly popular in China and the five-clawed dragon was a symbol of the Chinese emperors, with the phoenix or fenghuang the symbol of the Chinese empress. Dragon costumes manipulated by several people are a common sight at Chinese festivals. Japanese Main article: Japanese dragon Japanese dragon myths amalgamate native legends with imported stories about dragons from China, Korea and India. Like these other Asian dragons, most Japanese ones are water deities associated with rainfall and bodies of water, and are typically depicted as large, wingless, serpentine creatures with clawed feet. Gould writes (1896:248)[6], the Japanese dragon is "invariably figured as possessing three claws".
Ajay V

Deforestation in the Amazon - 0 views

shared by Ajay V on 11 Sep 09 - Cached
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    Home What's New About Contribute Submissions Rainforests Mission Introduction Characteristics Biodiversity The Canopy Forest Floor Forest Waters Indigenous People Deforestation Consequences Saving Rainforests Amazon rainforest Borneo rainforest Congo rainforest Country Profiles Statistics Works Cited For Kids For Teachers Photos/Images Expert Interviews Rainforest News XML Feeds Chinese French Japanese Spanish Other Languages Pictures Books Links Newsletter Education Mongabay Sites Kids' site Travel Tips Tropical Fish Madagascar Contact About this site Providing tropical forest news, statistics, photos, and information, rainforests.mongabay.com is the world's most popular rainforest site. [more] Deforestation in the Amazon DEFORESTATION IN BRAZIL: 60-70 percent of deforestation in the Amazon results from cattle ranches while the rest mostly results from small-scale subsistence agriculture. Despite the widespread press attention, large-scale farming (i.e. soybeans) currently contributes relatively little to total deforestation in the Amazon. Most soybean cultivation takes place outside the rainforest in the neighboring cerrado grassland ecosystem and in areas that have already been cleared. Logging results in forest degradation but rarely direct deforestation. However, studies have showed a close correlation between logging and future clearing for settlement and farming. [Português | Español | Français] Deforestation by state Deforestation Figures for Brazil Year Deforestation [sq mi] Deforestation [sq km] Change [%] 1988 8,127 21,050 1989 6,861 17,770 -16% 1990 5,301 13,730 -23% 1991 4,259 11,030 -20% 1992 5,323 13,786 25% 1993 5,751 14,896 8% 1994 5,751 14,896 0% 1995 11,220 29,059 95% 1996 7,012 18,161 -38% 1997 5,107 13,227 -27% 1998 6,712 17,383 31% 1999 6,664 17,259 -1% 2000 7,037 18,226 6% 2001 7,014 18,165 0% 2002 8,260 2
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    TROPICAL RAINFORESTS: Deforestation in Brazil Click Here Home What's New About Contribute Submissions Rainforests Mission Introduction Characteristics Biodiversity The Canopy Forest Floor Forest Waters Indigenous People Deforestation Consequences Saving Rainforests Amazon rainforest Borneo rainforest Congo rainforest Country Profiles Statistics Works Cited For Kids For Teachers Photos/Images Expert Interviews Rainforest News XML Feeds Chinese French Japanese Spanish Other Languages Pictures Books Links Newsletter Education Mongabay Sites Kids' site Travel Tips Tropical Fish Madagascar Contact About this site Providing tropical forest news, statistics, photos, and information, rainforests.mongabay.com is the world's most popular rainforest site. [more] Deforestation in the Amazon DEFORESTATION IN BRAZIL: 60-70 percent of deforestation in the Amazon results from cattle ranches while the rest mostly results from small-scale subsistence agriculture. Despite the widespread press attention, large-scale farming (i.e. soybeans) currently contributes relatively little to total deforestation in the Amazon. Most soybean cultivation takes place outside the rainforest in the neighboring cerrado grassland ecosystem and in areas that have already been cleared. Logging results in forest degradation but rarely direct deforestation. However, studies have showed a close correlation between logging and future clearing for settlement and farming. [Português | Español | Français] Deforestation by state Deforestation Figures for Brazil Year Deforestation [sq mi] Deforestation [sq km] Change [%] 1988 8,127 21,050 1989 6,861 17,770 -16% 1990 5,301 13,730 -23% 1991 4,259 11,030 -20% 1992 5,323 13,786 25% 1993 5,751 14,896 8% 1994 5,751 14,896 0% 1995 11,220 29,059 95% 1996 7,012 18,161 -38% 1997 5,107 13,227 -27% 1998 6,712 17,383 31% 1999 6,664
Ajay V

Rainforest Facts - 2 views

shared by Ajay V on 09 Sep 09 - Cached
  • It is estimated that nearly half of the world's estimated 10 million species of plants, animals, and microorganisms will be destroyed or severely threatened over the next quarter-century due to rainforest deforestation.
    • Marius S
       
      Wow!
  • Commercial logging is the single largest cause of rainforest destruction, both directly and indirectly. Other activities destroying the rainforest, including clearing land for grazing animals and subsistence farming. The simple fact is that people are destroying the Amazon rainforest and the rest of the rainforests of the world because "they can't see the forest for the trees."
    • Gurupranav G
       
      Useful if you are looking at the destruction of rainforests.
  • When a medicine man dies without passing his arts on to the next generation, the tribe and the world loses thousands of years of irreplaceable knowledge about medicinal plants.
    • Marius S
       
      Linked to a paragraph below...
  • ...19 more annotations...
  • Rainforests once covered 14% of the earth's land surface
    • Gurupranav G
       
      gurusQ4. Useful- Destruction of rainforests.
  • Most rainforests are cleared by chainsaws, bulldozers and fires for its timber value and then are followed by farming and ranching operations, even by world giants like Mitsubishi Corporation, Georgia Pacific, Texaco and Unocal.
    • Gurupranav G
       
      gurusQ4. Useful. Destruction of rainforests.
  • There were an estimated ten million Indians living in the Amazonian Rainforest five centuries ago. Today there are less than 200,000.
    • Audrey C
       
      Why though?
  • At least 3000 fruits are found in the rainforests; of these only 200 are now in use in the Western World.
    • Antonio D
       
      We should stop this!
  • The beauty, majesty, and timelessness of a primary rainforest are indescribable. It is impossible to capture on film, to describe in words, or to explain to those who have never had the awe-inspiring experience of standing in the heart of a primary rainforest.
  • Each time a rainforest medicine man dies, it is as if a library has burned down.
    • Chloe W
       
      I can't believe they have that much knowledge!
  • At least 80% of the developed world's diet originated in the tropical rainforest. Its bountiful gifts to the world include fruits like avocados, coconuts, figs, oranges, lemons, grapefruit, bananas, guavas, pineapples, mangos and tomatoes; vegetables including corn, potatoes, rice, winter squash and yams; spices like black pepper, cayenne, chocolate, cinnamon, cloves, ginger, sugar cane, tumeric, coffee and vanilla and nuts including Brazil nuts and cashews.
    • Chloe W
       
      WOW! It may not be the most unique foods and plants, but it is interesting that most of our things come from rainforests!
    • Chloe W
       
      Hopefully, this will come in handy for my central idea.
  • Two drugs obtained from a rainforest plant known as the Madagascar periwinkle, now extinct in the wild due to deforestation of the Madagascar rainforest, have increased the chances of survival for children with leukemia from 20 percent to 80 percent. Think about it: eight out of ten children are now saved, rather than eight of ten children dying from leukemia. How many children have been spared and how many more will continue to be spared because of this single rainforest plant? What if we had failed to discover this one important plant among millions before human activities had led to its extinction? When our remaining rainforests are gone, the rare plants and animals will be lost forever-and so will the possible cures for diseases like cancer they can provide.
    • Marius S
       
      Because of deforestation, all this has happened!
  • Rainforests have evolved over millions of years to turn into the incredibly complex environments they are today. Rainforests represent a store of living and breathing renewable natural resources that for eons, by virtue of their richness in both animal and plant species, have contributed a wealth of resources for the survival and well-being of humankind. These resources have included basic food supplies, clothing, shelter, fuel, spices, industrial raw materials, and medicine for all those who have lived in the majesty of the forest. However, the inner dynamics of a tropical rainforest is an intricate and fragile system. Everything is so interdependent that upsetting one part can lead to unknown damage or even destruction of the whole. Sadly, it has taken only a century of human intervention to destroy what nature designed to last forever. The scale of human pressures on ecosystems everywhere has increased enormously in the last few decades. Since 1980 the global economy has tripled in size and the world population has increased by 30 percent. Consumption of everything on the planet has risen- at a cost to our ecosystems. In 2001, The World Resources Institute estimated that the demand for rice, wheat, and corn is expected to grow by 40% by 2020, increasing irrigation water demands by 50% or more. They further reported that the demand for wood could double by the year 2050; unfortunately, it is still the tropical forests of the world that supply the bulk of the world's demand for wood.
    • Yen Yu C
       
      rainforest could be gone if the wood suplies keeps going up like this!
  • In 1950, about 15 percent of the Earth's land surface was covered by rainforest. Today, more than half has already gone up in smoke. In fewer than fifty years, more than half of the world's tropical rainforests have fallen victim to fire and the chain saw, and the rate of destruction is still accelerating. Unbelievably, more than 200,000 acres of rainforest are burned every day. That is more than 150 acres lost every minute of every day, and 78 million acres lost every year! More than 20 percent of the Amazon rainforest is already gone, and much more is severely threatened as the destruction continues. It is estimated that the Amazon alone is vanishing at a rate of 20,000 square miles a year. If nothing is done to curb this trend, the entire Amazon could well be gone within fifty years. Massive deforestation brings with it many ugly consequences-air and water pollution, soil erosion, malaria epidemics, the release of carbon dioxide into the atmosphere, the eviction and decimation of indigenous Indian tribes, and the loss of biodiversity through extinction of plants and animals. Fewer rainforests mean less rain, less oxygen for us to breathe, and an increased threat from global warming.
    • Yen Yu C
       
      that is just scary but it is something we must know inorder for someone to solve the problem someday...i guess
  • But who is really to blame? Consider what we industrialized Americans have done to our own homeland. We converted 90 percent of North America's virgin forests into firewood, shingles, furniture, railroad ties, and paper. Other industrialized countries have done no better. Malaysia, Indonesia, Brazil, and other tropical countries with rainforests are often branded as "environmental villains" of the world, mainly because of their reported levels of destruction of their rainforests. But despite the levels of deforestation, up to 60 percent of their territory is still covered by natural tropical forests. In fact, today, much of the pressures on their remaining rainforests comes from servicing the needs and markets for wood products in industrialized countries that have already depleted their own natural resources. Industrial countries would not be buying rainforest hardwoods and timber had we not cut down our own trees long ago, nor would poachers in the Amazon jungle be slaughtering jaguar, ocelot, caiman, and otter if we did not provide lucrative markets for their skins in Berlin, Paris, and Tokyo.
    • Yen Yu C
       
      why really is to blame??i think it's every human that lives in a house and have wonerful furnitures . I think even me.....us....
    • Yen Yu C
       
      good for some of my questions.....
  • More than half of the world's estimated 10 million species of plants, animals and insects live in the tropical rainforests. One-fifth of the world's fresh water is in the Amazon Basin.
    • Gurupranav G
       
      Useful for my Q1, Q3
  • It is estimated that a single hectare (2.47 acres) of Amazon rainforest contains about 900 tons of living plants, including more than 750 types of trees and 1500 other plants.
    • Gurupranav G
       
      Useful if you are loking at the biodiversity of a rainforest.
  • Destruction of our rainforests is not only causing the extinction of plant and animal species, it is also wiping out indigenous peoples who live in the rainforest.
    • Gurupranav G
       
      Useful for my Q4
  • he problem and the solution of the destruction of the rainforest are both economic. Governments need money to service their debts, squatters and settlers need money to feed their families, and companies need to make profits. The simple fact is that the rainforest is being destroyed for the income and profits it yields, however fleeting. Money still makes the world go around . . . even in South America and even in the rainforest. But this also means that if landowners, governments, and those living in the rainforest today were given a viable economic reason not to destroy the rainforest, it could and would be saved. And this viable economic alternative does exist, and it is working today. Many organizations have demonstrated that if the medicinal plants, fruits, nuts, oils, and other resources like rubber, chocolate, and chicle (used to make chewing gums) are harvested sustainably, rainforest land has much more economic value today and more long-term income and profits for the future than if just timber is harvested or burned down for cattle or farming operations. In fact, the latest statistics prove that rainforest land converted to cattle operations yields the landowner $60 per acre; if timber is harvested, the land is worth $400 per acre. However, if medicinal plants, fruits, nuts, rubber, chocolate, and other renewable and sustainable resources are harvested, the land will yield the landowner $2,400 per acre. This value provides an income not only today, but year after year - for generations. These sustainable resources - not the trees - are the true wealth of the rainforest.
    • Gurupranav G
       
      Useful for my Q4. Tells you the basic reason why rainforests are being destroyed.
    • Marius S
       
      That's interesting...
  • More than 20 percent of the world oxygen is produced in the Amazon Rainforest.
  • And while 25% of Western pharmaceuticals are derived from rainforest ingredients, less than 1% of these tropical trees and plants have been tested by scientists.
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    Its good
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    At least 3000 fruits are found in the rainforests; of these only 200 are now in use in the Western World
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    Its intersting, and I never knew that!
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    Loads of inforamation... really good!
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    a commercial website that has a page of rainforest facts aimed at students doing reports
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    At least 3000 fruits are found in the rainforests; of these only 200 are now in use in the Western World
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    At least 3000 fruits are found in the rainforests; of these only 200 are now in use in the Western World
Elizabeth B

Tiger - Wikipedia, the free encyclopedia - 0 views

  • Highly adaptable, tigers range from the Siberian taiga, to open grasslands, to tropical mangrove swamps. They are territorial and generally solitary animals, often requiring large contiguous areas of habitat that support their prey demands. This, coupled with the fact that they are endemic to some of the more densely populated places on earth, has caused significant conflicts with humans. Of the nine subspecies of modern tiger, three are extinct and the remaining six are classified as endangered, some critically so. The primary direct causes are habitat destruction and fragmentation, and hunting. Their historical range, which once reached from Mesopotamia and the Caucasus through most of South and East Asia, has been radically reduced. While all surviving species are under formal protection, poaching, habitat destruction and inbreeding depression continue to be threats.
  • Tigers are perhaps the most recognisable of all the cats (with the possible exception of the lion). They typically have rusty-reddish to brown-rusty coats, a whitish medial and ventral area, a white "fringe" that surrounds the face, and stripes that vary from brown or gray to pure black.
  • Main article: Golden tabby A rare golden tabby/strawberry tiger at the Buffalo Zoo. In addition, another recessive gene may create a very unusual "golden tabby" colour variation, sometimes known as "strawberry." Golden tabby tigers have light gold fur, pale legs and faint orange stripes. Their fur tends to be much thicker than normal.[50] There are extremely few golden tabby tigers in captivity, around 30 in all. Like white tigers, strawberry tigers are invariably at least part Bengal. Some golden tabby tigers, called heterozygous tigers, carry the white tiger gene, and when two such tigers are mated, can produce some stripeless white offspring. Both white and golden tabby tigers tend to be larger than average Bengal tigers.
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    Highly adaptable, tigers range from the Siberian taiga, to open grasslands, to tropical mangrove swamps. They are territorial and generally solitary animals, often requiring large contiguous areas of habitat that support their prey demands. This, coupled with the fact that they are endemic to some of the more densely populated places on earth, has caused significant conflicts with humans. Of the nine subspecies of modern tiger, three are extinct and the remaining six are classified as endangered, some critically so. The primary direct causes are habitat destruction and fragmentation, and hunting. Their historical range, which once reached from Mesopotamia and the Caucasus through most of South and East Asia, has been radically reduced. While all surviving species are under formal protection, poaching, habitat destruction and inbreeding depression continue to be threats.
Avinash X

War - MSN Encarta - 1 views

  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
    • Marius S
       
      Interesting start...
    • Avinash X
       
      conflicts are not necesserily war
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • ...17 more annotations...
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • War, in international law, armed conflict between two or more governments or states. When such conflicts assume global proportions, they are known as world wars. War between different parts or factions of the same nation is called civil war.
  • s worl
  • Conflicts or wars in which major powers purposely refrain from employing all their armed strength are often known as limited wars.
  • A rebellion is not legally considered a war; to entitle the armed forces of the rebels to the rights and privileges of belligerents, the government they serve must be organized so as to be in a position to meet the duties resting on belligerents, that is, they must have the power to maintain law and order within the regions occupied by them and to carry on war on a large scale by land, sea, or air. International hostilities sometimes continue for long periods of time without being acknowledged as wars. The Korean War was regarded by the U.S. government as a police action. Conflicts or wars in which major powers purposely refrain from employing all their armed strength are often known as limited wars. International wars are generally terminated by treaty, and civil wars by a peace proclamation. The usages, customs, and treaties of nations have formed a system of laws of war.
Lucy C

The Food Chain - 0 views

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    The Food Chain RealAudio Click here to be joined by your audio host! What is the difference between the 'Food Chain' and 'Food Web?' A popular misnomer, the 'food chain' is not actually a linear chain but a complex web. Energy is passed from one organism to another in a complex network like a spider's web. The food chain consists of four main parts: * The Sun, which provides the energy for everything on the planet. * Producers: these include all green plants. These are also known as autotrophs, since they make their own food. Producers are able to harness the energy of the sun to make food. Ultimately, every (aerobic) organism is dependent on plants for oxygen (which is the waste product from photosynthesis) and food (which is produced in the form of glucose through photosynthesis). They make up the bulk of the food chain or web. * Consumers: In short, consumers are every organism that eats something else. They include herbivores (animals that eat plants), carnivores (animals that eat other animals), parasites (animals that live off of other organisms by harming it), and scavengers (animals that eat dead animal carcasses). Primary consumers are the herbivores, and are the second largest biomass in an ecosystem. The animals that eat the herbivores (carnivores) make up the third largest biomass, and are also known as secondary consumers. This continues with tertiary consumers, etc. * Decomposers: These are mainly bacteria and fungi that convert dead matter into gases such as carbon and nitrogen to be released back into the air, soil, or water. Fungi, and other organisms that break down dead organic matter are known as saprophytes. Even though most of us hate those mushrooms or molds, they actually play a very important role. Without decomposers, the earth would be covered in trash. Decomposers are necessary since they recycle the nutrients to be used again by producers. This table shows the relational biomass of each of the major g
Thomas C

Rainforest Animals - 5 views

  • Scientists believe that there is such a great diversity of animals because rainforests are the oldest ecosystem on earth.
  • Many animals species have developed relationships with each other that benefit both species. Birds and mammal species love to eat the tasty fruits provided by trees. Even fish living in the Amazon River rely on fruits dropped from forest trees. In turn, the fruit trees depend upon these animals to eat their fruit, which helps them to spread their seeds to far-off parts of the forest.
    • Gurupranav G
       
      This may help me answer my question on the interdependence of the animals of a rainforest, and it may help you out too, if you are looking at the interdependence of the animals in a rainforest
    • Zina S
       
      Why didthey kill the dodo birds!? It doesnt make any sence!
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  • DOZENS OF ANIMAL SPECIES A DAY BECOME EXTINCT IN TROPICAL RAINFORESTS
    • Thomas C
       
      WHAT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  • When rainforests are destroyed, animals living outside the tropics suffer as well. Songbirds, hummingbirds, warblers and thousands of other North American birds spend their winters in rainforests, returning to the same location year after year. Less return north each spring, as few make it through the winter because their habitat has been destroyed. The cutting down of trees is not the only reason for species extinction. Thousands of monkeys and other primates are traded illegally on the international market each year, wanted for their fur, as pets, or for scientific research. Parrots and macaws have also become popular pets; buyers will pay up to $10,000 for one bird. Even the king of the jungle, the jaguar, is in danger of becoming extinct. Its fur is highly valued for use on coats and shoes.
    • Woo Hyun C
       
      With out rainforests the bird can't survive either! If we keep destroying rainforests we are harming the animals outside the rainforet
    • Chloe W
       
      Deforestation in rainforests are not lonly effecting animals that live in it, but also ones that live outside.
    • Thomas C
       
      If this carries on there will be no life left on earth!
  • Scientists estimate that there are more than 50 million different species of invertebrates living in rainforests. One scientist found 50 different species of ants on a single tree in Peru! You would probably only need a few hours of poking around in a rainforest to find an insect unknown to science.
  • In some cases both species are so dependent upon each other that if one becomes extinct, the other will as well. This nearly happened with trees that relied on the now-extinct dodo birds. They once roamed Mauritius, a tropical island located in the Indian Ocean. They became extinct during the late 19th century when humans overhunted them. The calvaria tree stopped sprouting seeds soon after. Scientists finally concluded that, for the seeds of the calvaria tree to sprout, they needed to first be digested by the dodo bird. By force-feeding the seeds to a domestic turkey, who digested the seeds the same way as the dodo birds, the trees were saved. Unfortunately humans will not be able to save each species in this same way.
    • Gurupranav G
       
      This may help me answer my question on the interdependence of the animals of a rainforest, and it may help you out too, if you are looking at the interdependence of the animals in a rainforest
  • The constant search for food, water, sunlight and space is a 24-hour pushing and shoving match. With this fierce competition, you may be amazed that so many different species of animals can all live together. But this is actually the cause of the huge number of different species.The main secret lies in the ability of many animals to adapt to eating a specific plant or animal, which few other species are able to eat. Have you ever wondered, for instance, why toucans and parrots have such big beaks? These beaks give them a great advantage over other birds with smaller beaks. The fruits and nuts from many trees have evolved with a tough shell to protect them from predators. In turn toucans and parrots developed large strong beaks, which serves as a nutcracker and provides them with many tasty meals.
    • Gurupranav G
       
      This peice of information will be useful if you are looking at the adaptations of different animals in the rainforest. This is useful for me.
  • Each species has evolved with its own set of unique adaptations, ways of helping them to survive. Every animal has the ability to protect itself from being someone's next meal. The following are just a few of these unique and often bizarre adaptations. CAMOUFLAGE The coloring of some animals acts as protection from their predators. Insects play some of the best hide-and-go-seek in the forest. The "walking stick" is one such insect; it blends in so well with the palm tree it calls its home that no one would notice it unless it moved. Some butterflies, when they close their wings, look exactly like leaves. Camouflage also works in reverse, helping predators, such as boa constrictors, sneak up on unsuspecting animals and surprise them. SLOW AS A SNAIL The three-toed sloth is born with brown fur, but you would never know this by looking at it. The green algae that makes its home in the sloth's fur helps it to blend in with the tops of the trees, the canopy, where it makes its home. But green algae isn't the only thing living in a sloth's fur; it is literally "bugged" with a variety of insects. 978 beetles were once found living on one sloth! The sloth has other clever adaptations. Famous for its snail-like pace; it is one of the slowest-moving animals on earth. (It can even take up to a month to digest its food!) Although its tasty meat would make a good meal for jaguars and other predators, most do not notice the sloth as it hangs quietly in the trees, high up in the canopy. DEADLY CREATURES Other animals want to announce their presence to the whole forest. Armed with dangerous poisons used in life-threatening situations, their bright colors warn predators to stay away. The coral snake of the Amazon, with its brilliant red, yellow, and black coloring, is recognized as one of the most beautiful snakes in the world, But don't admire its beauty too long; its deadly poison can kill within seconds The poison arrow frog also stands out with its brightly colored skin. Its skin produces some of the strongest natural poison in the world, which Indigenous people often use for hunting purposes. Another animal with no friends is the hoatzin. Often called the stinkbird, it produces a horrible smell to scare
    • Gurupranav G
       
      This is also useful information if you are looking at the adaptations of the animals of a rainforest.
  • An average of 35 species becomes extinct every day in the world's tropical rainforests.
    • Chloe W
       
      Most of these species, we haven't discovered their uses yet. We don't care that we don't even know what they are and never will
  • Rivers have become both overfished and polluted. Gillnets now allow fishermen to kill huge amounts of fish at a time. They often use only the larger and more profitable fish, dumping the dead smaller fish and other animals such as dolphins back into the rivers.
    • Chloe W
       
      This is terrible. We are losing our air supply, and now our water supply is getting polluted. I hope we can stop it.
  • Tropical rainforests are home to many of the strangest-looking and most beautiful, largest and smallest, most dangerous and least frightening, loudest and quietest animals on earth. You've probably heard of some of them; jaguars, toucans, parrots, gorillas, and tarantulas all make their homes in tropical rainforests. But have you ever heard of the aye-aye? Or the okapi? There are so many fascinating animals in tropical rainforests that millions haven't been named or even identified yet. In fact, about half of all the world's species live in tropical rainforests.
    • Shaian R
       
      How can we save the animals
  • During the Ice Ages, the last of which occurred about 10,000 years ago, the frozen areas of the North and South Poles spread over much of the earth, causing huge numbers of extinctions. But the giant freeze did not reach many tropical rainforests. Therefore, these plants and animals could continue to evolve, developing into the most diverse and complex ecosystems on earth. The nearly perfect conditions for life also help contribute to the great number of species. With temperatures constant at 75 -80 degrees F. the whole year, animals don't have to worry about freezing during cold winters or finding shade in the hot summers. They rarely have to search for water, as rain falls almost every day in tropical rainforests. Some rainforest species have populations that number in the millions. Other species consist of only a few dozen individuals. Living in limited areas, most of these species are endemic, or found nowhere else on earth. The maues marmoset, a species of monkey, wasn't discovered until recently. Its entire tiny population lives within a few square miles in the Amazon rainforest. It is so small, it could sit in a person's hand!
    • Thomas C
       
      A rainforest history lesson.
    • Avinash X
       
      this might help me in my research as i am researching on insects and the interesting ways of decieving their predators
  • Leaf-cutter, or parasol ants, can rightfully be called the world's first farmers. They climb trees up to 100-feet tall and cut out small pieces of leaves. They then carry these fragments, weighing as much as 50 times their body weight, back to their homes. Sometimes they must travel 200 feet, equal to an average human walking about 6 miles with 5,000 lbs. on his/her back! The forest floor is converted to a maze of busy highways full of these moving leaf fragments. These ants don't eat the leaves they have collected, but instead bury them underground. The combination of leaves and substances that the ants produce such as saliva allows a type of fungus to grow. This fungus is the only food that the ants need to eat. Azteca ants live on the swollen thorn acacia tree, which offers the ants everything needed for survival - lodging, water, and food for themselves and their young. In return, the ants protect the trees from predators. Whenever the ants feel something brush against the tree, they rush to fiercely fight the intruder. They also protect it from vines and other competing plants that would otherwise strangle it. As a result, nothing can grow near these trees. They are the only trees with a built-in alarm system!
    • Thomas C
       
      farming ants!
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    how some animals become extinct
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    good for animals survival. Chloe: This website has great information on animals of the rainforest.
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    This talks about animals and the ways they escape from predators.
Avinash X

Animals - 0 views

  • The Champions of the Animal KingdomPeople are good at a lot of things, but if animals could enter the Olympics as one team they would probably win almost all the medals! Animals can outrun, outswim, and outjump all humans. Young cheetahs learn to hunt by watching their mother. Later, they start taking part in the hunt. Cheetahs are the fastest land animal and can reach speeds of 113kph in short bursts. ©G.Ellis/GLOBIO.org Fastest Mammal on Land Cheetahs can run up to 113 kph. Fastest Mammal in Water Dall porpoises can swim up to 56 kph. Fastest Flying Bird Peregrine falcons can dive toward the ground at more than 320 kph. Fastest Flightless Bird North African ostriches are the fastest birds on land. They can run at speeds up to 72 kph. They are also the biggest bird. They can weigh 155 kg. Fastest Fish Sailfish can swim up to 109 kph. Loudest Animal The blue whale’s low-frequency pulses are as loud as 188 decibels. This is louder than a jet engine. A blue whale’s call can be detected more than 805 km away. On land, the loudest animals are howler monkeys. Their howls can be heard 4.8 km away.
    • Avinash X
       
      i hope this interests you
  • Arctic terns migrate to and from the Antarctic - about 35,405 km round trip - each year. Among mammals, gray whales and northern elephant seals are the migration champions. They travel up to 20,900 km round trip each year. Deadliest Animal Female Anopheles mosquitoes, which carry and transmit malaria, play a role in the deaths of more than a million people each year. Most Venomous Animal A single sea wasp (a kind of jellyfish with 60 tentacles, each 4 m long) has enough venom to kill 60 adult humans. Strongest Animal The rhinoceros beetle can lift 850 times its own weight
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  • Longest Gestation Asian elephants are born after a gestation period of 19 to 22 months. Largest Mammal Blue whales are the largest mammals of all time and the largest living animal. Females grow to a length of about 27 m. They may weigh well over 100 metric tons. The heaviest blue whale weighed more than 190 metric tons. The longest ever measured was more than 33 m. African elephant bulls are the heaviest land animal. Large males may weigh as much as 5,895kg. Despite their power and size, elephants are vegetarians, or herbivores. ©G.Ellis/GLOBIO.org Largest Living Animal on Land African elephants are the heaviest land animal. They are also the second tallest land animal. Large bulls (males) weigh more than 5,895 kg and are 3.5 m tall at the shoulder. Giraffes, which can grow to a height of 5 m, are the tallest land animals. Large males weigh more than 1,800 kg. Smallest Vertebrate Australia's stout infantfish, slightly smaller than the better-known dwarf goby, is less than 1 cm long. Smallest Bird Adult bee hummingbirds, found in Cuba, weigh about 2 g. Smallest Mammal Adult bumblebee bats, which live in Thailand, weigh about 2 g. Longest Lifespan In the 1770s, British explorer Captain James Cook presented a Madagascar radiated tortoise to the royal family of Tonga. The tortoise lived until 1965. It was at least 188 years old when it died! Several Galápagos tortoises h
  • ave lived past age 150.
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    this looks quite informative. i never knew this!!!
Yen Yu C

Benefits of Deforestation - 0 views

  • One of the easiest benefits of deforestation to spot are the economic ones. Lumber products are one of the most staple constructive materials in human society. Whether it's raw lumber used for making tables and houses, or paper and other wood by-products, we simply cannot live without the use of lumber. Like steel and stone, wood is one of the most basic natural resources, and unlike steel and stone, it is renewable simply by growing more trees. The only real trick to balancing it's consumption is to grow more trees to replace the ones taken.
    • Yen Yu C
       
      that's why it's soo hard to be balanced. Good for my question Q$
  • his benefit of deforestation not only covers the people who cut down trees and process them, but also extends to the people who "clean up" after them. For every patch of forest cut down, arable land becomes available for farmers, or can be used as an area to place urban living sites like apartments, houses, and buildings. The number of people employed by such a construction project are many and varied. Or, if the city/government mandates replanting trees to replace the lost ones, then jobs are also provided for those people who do the seeding after a patch of forest is stripped.
    • Yen Yu C
       
      Key Words "Clean Up"
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    One of the easiest benefits of deforestation to spot are the economic ones. Lumber products are one of the most staple constructive materials in human society. Whether it's raw lumber used for making tables and houses, or paper and other wood by-products, we simply cannot live without the use of lumber. Like steel and stone, wood is one of the most basic natural resources, and unlike steel and stone, it is renewable simply by growing more trees. The only real trick to balancing it's consumption is to grow more trees to replace the ones taken. On a similarly related note, keep in mind that a lot of jobs revolve around the use of lumber. Wood cutters aside, there are those who work in processing plants to make glue from wood sap, process pulp into paper, and others. This is another benefit of deforestation; it opens more job opportunities for people who would otherwise be unemployed. These job opportunities are more than simply a humanitarian concept; society at large would suffer if all of the people working in the wood industry were to suddenly find themselves jobless. This benefit of deforestation not only covers the people who cut down trees and process them, but also extends to the people who "clean up" after them. For every patch of forest cut down, arable land becomes available for farmers, or can be used as an area to place urban living sites like apartments, houses, and buildings. The number of people employed by such a construction project are many and varied. Or, if the city/government mandates replanting trees to replace the lost ones, then jobs are also provided for those people who do the seeding after a patch of forest is stripped. Thinking about it, the cleared areas are places which provide a lot of potential for growth, and this is yet another benefit of deforestation. As stated above, arable land is valuable, and the act of deforestation to clear a place for farm land provides a much needed additional food source for man. More often than not, the
Hugues M

Land mine - Wikipedia, the free encyclopedia - 1 views

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    "A land mine is a target (person or vehicle) triggered explosive weapon . Their non-explosive predecessors (caltrops, stakes and spikes) have been used on the battlefield since ancient times. Landmines were designed to be used to deter, channel, delay and kill an enemy. They have been used in various formats, for centuries and have featured in all major conflicts. Land mines are force multipliers , meaning that they may increase the efficiency of a force without requiring more personnel. The name originates from the practice of mining , where tunnels were dug under enemy fortifications or forces. These tunnels ("mines") were first collapsed to destroy fortifications above, and later filled with explosives and detonated. Land mines generally refer to devices specifically manufactured for this purpose, as distinguished from improvised explosive devices ("IEDs"). The use of land mines is controversial because they are indiscriminate weapons, harming soldier and civilian alike. They remain dangerous after the conflict in which they were deployed has ended, killing and injuring civilians and rendering land impassable and unusable for decades. To make matters worse, many factions have not kept accurate records (or any at all) of the exact locations of their minefields, making removal efforts painstakingly slow. These facts pose serious difficulties in many developing nations where the presence of mines hampers resettlement, agriculture, and tourism. The International Campaign to Ban Landmines campaigned successfully to prohibit their use, culminating in the 1997 Convention on the Prohibition of the Use, Stockpiling, Production and Transfer of Anti-Personnel Mines and on their Destruction, known informally as the Ottawa Treaty . As of 2007, a total of 158 nations have agreed to the treaty. Thirty-seven countries have not agreed to the ban, including China , India , Israel , Pakistan
Gurupranav G

Rainforest Biomes - 0 views

  • Many species of animal life can be found in the rain forest. Common characteristics found among mammals and birds (and reptiles and amphibians, too) include adaptations to a life in the trees, such as the prehensile tails of New World monkeys. Other characteristics are bright colors and sharp patterns, loud vocalizations, and diets heavy on fruits. Insects make up the largest single group of animals that live in tropical forests. They include brightly colored butterflies, mosquitoes, camouflaged stick insects, and huge colonies of ants. The Amazon river basin rainforest contains a wider variety of plant and animal life than any other biome in the world. The second largest population of plant and animal life can be found in scattered locations and islands of Southeast Asia. The lowest variety can be found in Africa. There may be 40 to 100 different species in 2.5 acres ( 1 hectare) of a tropical rain forest.   When early explorers first discovered the rainforests of Africa, Southeast Asia and South America, they They were amazed by the dense growth, trees with giant buttresses, vines and epiphytes . The tropical vegetation grew so dense that it was difficult to cut one's way through it. It was thought at the time that the soil of a rainforest must be very fertile, filled with nutrients, enabling it to support the immense trees and other vegetation they found. Today we know that the soil of the tropical rainforests is shallow, very poor in nutrients and almost without soluble minerals. Thousands of years of heavy rains have washed away the nutrients in the soil obtained from weathered rocks. The rainforest has a very short nutrient cycle. Nutrients generally stay in an ecosystem by being recycled and in a rainforest are mainly found in the living plants and the layers of decomposing leaf litter. Various species of decomposers like insects, bacteria, and fungi make quick work of turning dead plant and animal matter into nutrients. Plants take up these nutrients the moment they are released. A study in the Amazon rainforest found that 99% of nutrients are held in root mats. When a rainforest is burned or cut down the nutrients are removed from the ecosystem. The soil can only be used for a very short time before it becomes completely depleted of all nutrients.
    • Gurupranav G
       
      A great peice of info if you want to look at the biodiversity of animals in a rainforest
  • Besides these four layers, a shrub/sapling layer receives about 3 % of the light that filters in through the canopies. These stunted trees are capable of a sudden growth surge when a gap in the canopy opens above them. The air beneath the lower canopy is almost always humid. The trees themselves give off water through the pores (stomata) of their leaves. This process, called transpiration, can account for as much as half of the precipitation in the rain forest. Rainforest plants have made many adaptations to their environment. With over 80 inches of rain per year, plants have made adaptations that helps them shed water off their leaves quickly so the branches don't get weighed down and break. Many plants have drip tips and grooved leaves, and some leaves have oily coatings to shed water. To absorb as much sunlight as possible on the dark understory, leaves are very large. Some trees have leaf stalks that turn with the movement of the sun so they always absorb the maximum amount of light. Leaves in the upper canopy are dark green, small and leathery to reduce water loss in the strong sunlight. Some trees will grow large leaves at the lower canopy level and small leaves in the upper canopy. Other plants grow in the upper canopy on larger trees to get sunlight. These are the epiphytes such as orchids and bromeliads. Many trees have buttress and stilt roots for extra support in the shallow, wet soil of the rainforests. Over 2,500 species of vines grow in the rainforest. Lianas start off as small shrubs that grow on the forest floor. To reach the sunlight in the upper canopy it sends out tendrils to grab sapling trees. The liana and the tree grow towards the canopy together. The vines grow from one tree to another and make up 40% of the canopy leaves. The rattan vine has spikes on the underside of its leaves that point backwards to grab onto sapling trees. Other "strangler" vines will use trees as support and grow thicker and thicker as they reach the canopy, strangling its host tree. They look like trees whose centers have been hollowed out. Dominant species do not exist in tropical rainforests. Lowland dipterocarp forest can consist of many different species of Dipterocarpaceae, but not all of the same species. Trees of the same species are very seldom found growing close together. This bio diversity and separation of the species prevents mass contamination and die-off from disease or insect infestation. Bio diversity also insures that there will be enough pollinators to take care of each species' needs. Animals depend on the staggered blooming and fruiting of rainforest plants to supply them with a year-round source of food.
    • Gurupranav G
       
      Again, another useful peice of info if you are looking at the diversity of plants in the rainforest.
  • There are four very distinct layers of trees in a tropical rain forest. These layers have been identified as the emergent, upper canopy, understory, and forest floor. Emergent trees are spaced wide apart, and are 100 to 240 feet tall with umbrella-shaped canopies that grow above the forest. Because emergent trees are exposed to drying winds, they tend to have small, pointed leaves. Some species lose their leaves during the brief dry season in monsoon rainforests. These giant trees have straight, smooth trunks with few branches. Their root system is very shallow, and to support their size they grow buttresses that can spread out to a distance of 30 feet. The upper canopy of 60 to 130 foot trees allows light to be easily available at the top of this layer, but greatly reduced any light below it. Most of the rainforest's animals live in the upper canopy. There is so much food available at this level that some animals never go down to the forest floor. The leaves have "drip spouts" that allows rain to run off. This keeps them dry and prevents mold and mildew from forming in the humid environment. The understory, or lower canopy, consists of 60 foot trees. This layer is made up of the trunks of canopy trees, shrubs, plants and small trees. There is little air movement. As a result the humidity is constantly high. This level is in constant shade. The forest floor is usually completely shaded, except where a canopy tree has fallen and created an opening. Most areas of the forest floor receive so little light that few bushes or herbs can grow there. As a result, a person can easily walk through most parts of a tropical rain forest. Less than 1 % of the light that strikes the top of the forest penetrates to the forest floor. The top soil is very thin and of poor quality. A lot of litter falls to the ground where it is quickly broken down by decomposers like termites, earthworms and fungi. The heat and humidity further help to break down the litter. This organic matter is then just as quickly absorbed by the trees' shallow roots
    • Gurupranav G
       
      This peice of info tells you about the plants that live in each of the layers of the rainforest and some of their qualities. Very useful indeed.
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  • The tropical rain forest is a forest of tall trees in a region of year-round warmth. An average of 50 to 260 inches (125 to 660 cm.) of rain falls yearly. Rain forests belong to the tropical wet climate group. The temperature in a rain forest rarely gets higher than 93 °F (34 °C) or drops below 68 °F (20 °C); average humidity is between 77 and 88%; rainfall is often more than 100 inches a year. There is usually a brief season of less rain. In monsoonal areas, there is a real dry season. Almost all rain forests lie near the equator. Rainforests now cover less than 6% of Earth's land surface. Scientists estimate that more than half of all the world's plant and animal species live in tropical rain forests. Tropical rainforests produce 40% of Earth's oxygen. A tropical rain forest has more kinds of trees than any other area in the world. Scientists have counted about 100 to 300 species in one 2 1/2-acre (1-hectare) area in South America. Seventy percent of the plants in the rainforest are trees. About 1/4 of all the medicines we use come from rainforest plants. Curare comes from a tropical vine, and is used as an anesthetic and to relax muscles during surgery. Quinine, from the cinchona tree, is used to treat malaria. A person with lymphocytic leukemia has a 99% chance that the disease will go into remission because of the rosy periwinkle. More than 1,400 varieties of tropical plants are thought to be potential cures for cancer. All tropical rain forests resemble one another in some ways. Many of the trees have straight trunks that don't branch out for 100 feet or more. There is no sense in growing branches below the canopy where there is little light. The majority of the trees have smooth, thin bark because there is no need to protect the them from water loss and freezing temperatures. It also makes it difficult for epiphytes and plant parasites to get a hold on the trunks. The bark of different species is so similar that it is difficult to identify a tree by its bark. Many trees can only be identified by their flowers. Despite these differences, each of the three largest rainforests--the American, the African, and the Asian--has a different group of animal and plant species. Each rain forest has many species of monkeys, all of which differ from the species of the other two rain forests. In addition, different areas of the same rain forest may have different species. Many kinds of trees that grow in the mountains of the Amazon rain forest do not grow in the lowlands of that same forest.
    • Gurupranav G
       
      This tells you about what a tropical rainforest basically is, some of it's qualities, even the temperature of the rain that falls there.
Elizabeth B

Orangutans - 0 views

    • Devangshi S
       
      orangutans go in the animal speiceis area
    • Zina S
       
      Its so sad that they are endangered!
  • All Grown Up Male orangutans are large apes. They are generally more than twice the size of females. Males may weigh around 90 kg. Females rarely reach 40 kg. ©G.Ellis/GLOBIO.org Around the age of
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  • Great Orange ApesOrangutans a
  • Do Not PetThe illegal pet trade in orangutans and many other types of wildlife is, unfortunately, very common in Indonesia and throughout Southeast Asia. Every year, hundreds of adult female orangutans are killed. Their babies are sold into the illegal pet trade. Many baby orangs die before they become pets. Stress and disease kills as many as four out of five young orangs in the first few months after being cau
    • Elizabeth B
       
      I must use this information it is soo important!
  • Snacking All Day LongAn orang’s digestive system is more similar to that of a carnivore than an herbivore. For this reason, much of what an orangutan eats is passed as poop. To make up for its inefficient digestion, an orangutan needs to consume a large amount of food - up to 12 kg of fruit, leaves, and bark each day - to get all its nutrients. To obtain this much food, an orang must spend 6-8 hours a day foraging and eating. Fruit is the First Choice
    • Elizabeth B
       
      I cant belive that!
  • an...and the Tropical Rainforests Orangutans spend their time in the lush, tropical dipterocarp forests. The forest has everything an orangutan needs including food, water, and lots of space to climb. ©G.Ellis/GLOBIO.org People are working to protect the orangutans and the tropical rainforests. The nations of Indonesia and M
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    Male orangutans are large apes. They are generally more than twice the size of females. Males may weigh around 90 kg. Females rarely reach 40 kg. ©G.Ellis/GLOBIO.org Around the age of eight, a young orangutan begins to move away from its mother and create its own life. It will be another six or seven years before it is fully grown. Adult males are twice the size of females. They weigh up to 90 kg. Females rarely reach 40 kg. A full-grown orangutan may stand as tall as 1.5 m at the shoulder (when on two legs). Female orangutans reach breeding age when they are around 15-years-old. They may continue to reproduce until about age 40. Orangutans live up to 60 years.
Shaian R

Deforestation - 0 views

  • What is Deforestation Deforestation is defined as the destruction of forested land. It has proved to be a major problem all over world. However, the rates of destruction of forests are particularly high in the tropics. Causes of Deforestation The causes of deforestation vary form place to place. The most common causes, however, are logging, agricultural expansion, wars, and mining, Effects of Deforestation Deforestation has been the cause of many problems facing the world today such as erosions, loss of biodiversity through extinction of plant and animal species, and increased atmospheric carbon dioxide. Importnace of Vegetation Deforestation consequently decrease the supply of oxygen found on earth. Oxygen is essential to the existence of all living things and without it every living creature (including humans) will not be able to sustain life. In addition, forests provide homes for many important species such as the Northern Spotted Owl which can only survive in the northwestern United States . Furthermore, forests prevent desertification by replenishing nutrients in the land. These are just a few reasons why forests are soon important.  
  • What is Deforestation Deforestation is defined as the destruction of forested land. It has proved to be a major problem all over world. However, the rates of destruction of forests are particularly high in the tropics. Causes of Deforestation The causes of deforestation vary form place to place. The most common causes, however, are logging, agricultural expansion, wars, and mining, Effects of Deforestation Deforestation has been the cause of many problems facing the world today such as erosions, loss of biodiversity through extinction of plant and animal species, and increased atmospheric carbon dioxide. Importnace of Vegetation Deforestation consequently decrease the supply of oxygen found on earth. Oxygen is essential to the existence of all living things and without it every living creature (including humans) will not be able to sustain life. In addition, forests provide homes for many important species such as the Northern Spotted Owl which can only survive in the northwestern United States . Furthermore, forests prevent desertification by replenishing nutrients in the land. These are just a few reasons why forests are soon important.   CLICK ON A REGION BELOW Africa South America North and Central America Europe Asia Oceania     Back to top | Home | Deforestation | Prevent | Interact | Bibliography | Contact ©2005 Copyright© Think Quest Team All Rights Reserved  
  •     Deforestation What is Deforestation Deforestation is defined as the destruction of forested land. It has proved to be a major problem all over world. However, the rates of destruction of forests are particularly high in the tropics. Causes of Deforestation The causes of deforestation vary form place to place. The most common causes, however, are logging, agricultural expansion, wars, and mining, Effects of Deforestation Deforestation has been the cause of many problems facing the world today such as erosions, loss of biodiversity through extinction of plant and animal species, and increased atmospheric carbon dioxide. Importnace of Vegetation Deforestation consequently decrease the supply of oxygen found on earth. Oxygen is essential to the existence of all living things and without it every living creature (including humans) will not be able to sustain life. In addition, forests provide homes for many important species such as the Northern Spotted Owl which can only survive in the northwestern United States . Furthermore, forests prevent desertification by replenishing nutrients in the land. These are just a few reasons why forests are soon important.
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  •     Deforestation What is Deforestation Deforestation is defined as the destruction of forested land. It has proved to be a major problem all over world. However, the rates of destruction of forests are particularly high in the tropics. Causes of Deforestation The causes of deforestation vary form place to place. The most common causes, however, are logging, agricultural expansion, wars, and mining, Effects of Deforestation Deforestation has been the cause of many problems facing the world today such as erosions, loss of biodiversity through extinction of plant and animal species, and increased atmospheric carbon dioxide. Importnace of Vegetation Deforestation consequently decrease the supply of oxygen found on earth. Oxygen is essential to the existence of all living things and without it every living creature (including humans) will not be able to sustain life. In addition, forests provide homes for many important species such as the Northern Spotted Owl which can only survive in the northwestern United States . Furthermore, forests prevent desertification by replenishing nutrients in the land. These are just a few reasons why forests are soon important.
Kavya D

The CAUSES of RAINFOREST DESTRUCTION - 0 views

  • The creation of national parks has undoubtedly helped to protect rainforests. Yet, as national parks are open to the public, tourism is damaging some of these areas. Often, national parks are advertised to tourists before adequate management plans have been developed and implemented. Inadequate funding is allocated for preservation of forests by government departments. Governments see tourism as an easy way to make money, and therefore tourism is encouraged whilst strict management strategies are given far less government support. Ecotourism, or environmentally friendly tourism, should educate the tourists to be environmentally aware. It should also be of low impact to its environment. Unfortunately, many companies and resorts who advertise themselves as eco-tourist establishments are in fact exploiting the environment for profit. In Cape Tribulation, Australia, for example, the rainforest is being threatened by excessive tourism. Clearing for roads and pollution of waterways are two of the major problems in this area. The Wet Tropics Management Authority which oversees the surrounding World Heritage Area is promoting tourism to the area before any management plans have been formulated, before any effective waste management strategy has been devised and before any ecofriendly power alternatives have been fully explored. Solutions: The rights of indigenous forest dwellers and others who depend on intact forests must be upheld. In instances where there are campaigns opposing specific tourist developments, they should be supported. Genuine ecotourism should be preferred to other tourist enterprises.
    • Kavya D
       
      How tourism affects the rainforests.
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    According to Professor Norman Myers, one of the foremost authorities on rates of deforestation in tropical forests, "the annual destruction rate seems set to accelerate yet further, and could well double in another decade" (Myers 1992). As Myers points out, "we still have half of all tropical forests that ever existed". The struggle to save the world's rainforests continues, and there is a growing worldwide concern about the issue. In order to save rainforests, we need to know why they are being destroyed. Nobody knows exactly how much of the world's rainforests have already been destroyed and continue to be razed each year. Data is often imprecise and subject to differing interpretations. However, it is obvious that the area of tropical rainforest is diminishing and the rate of tropical rainforest destruction is escalating worldwide, despite increased environmental activism and awareness. A 1992 study by the Food and Agriculture Organisation (FAO) placed the global rate of tropical deforestation at 17 million ha. per year. A study by the World Resources Institute (WRI) suggests that the figure could be as high as 20.4 million ha. per year. 1. Immediate Causes The immediate causes of rainforest destruction are clear. The main causes of total clearance are agriculture and in drier areas, fuelwood collection. The main cause of forest degradation is logging. Mining, industrial development and large dams also have a serious impact. Tourism is becoming a larger threat to the forests. 1.1 Logging Commercial logging companies cut down mature trees that have been selected for their timber. The timber trade defends itself by saying that this method of 'selective' logging ensures that the forest regrows naturally and in time, is once again ready for their 'safe' logging practices (WWF). In most cases, this is untrue due to the nature of rainforests and of logging practices. Large areas of rainforest are destroyed in order to remove only a few logs. The heavy mac
Annabelle H

Rainforest Animals - 0 views

  • The Sumatran rhinoceros is a small, hairy rhinoceros which survives in limited numbers in pockets of Indonesian and Malaysian rain forests. In the early 1900s it ranged over most of Southeast Asia from the Himalayas in Bhutan, eastern India through Malaysia, Sumatra and Borneo. Now they are only found in little forest pockets on the Indonesian island of Sumatra and the Malay peninsula.
    • Katherine G
       
      For Research, Remeber to do on weekends . . .
  • The smallest living rhinoceros, the Sumatran rhinoceros has a gray-brown leathery hide. Its deep folds around the neck, behind the front legs, and before the hind legs give the rhinoceros an armor-plated appearance. It has a short, stocky body and stumpy legs which are covered with coarse reddish-brown hair. Its body length is from 8 to 8.5 feet and stands 4.5 feet at the shoulders. A mature rhino weighs from 2200 to 4400 pounds.
  • The Sumatran rhinoceros is the only Asian rhinoceros with two horns. Both sexes of rhinos have horns, the front horn being larger, averaging 15 to 20 inches. The male's horns are usually bigger than the female's, whose second, smaller horn is often absent. The upper lip curves down and can move around to grasp objects.
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  • Information about the Sumatran rhino has been difficult to come by because it survives in small, scattered populations in the thick undergrowth of their rainforest habitat. It is known that the females have territories of about 1.2 to 2.2 miles in diameter that partially overlap with other females. The males seem to be nomadic. The estimated density per animal is approximately one animal per 15 sq. miles in high density areas, and one animal per 31 to 46 sq. miles in low density areas.
  • They live in a variety of habitats, but prefer higher elevations in the mountain moss forests and tropical rain forests with few human developments. The rhinos are most often found near water, and spend much of the day in mud wallows, which they dig out themselves and whose perimeters are kept clean. The wallows help the rhino avoid biting insects and protects them from the heat .
  • Sumatran rhinos are solitary animals who only come together to breed. Breeding of captive Sumatran rhinos has shown that the female will not come into estrus until she senses the nearness of a male. This reduces energy spent on cycling when the rhinos don't come into contact with each other on a regular basis. Gestation is 475 days with one calf per birth. The calf is covered with a dense coat of reddish hair. Calves are weaned at 18 month, but stay close to their mother for 2 to 3 years. Females reach sexual maturity at 4 years, and males take 7 years to reach sexual maturity. Birth intervals between calves is 3 to 4 years. The life span of captive rhinos is around 35 years.
  • Rhinos feed just before dawn and after dusk and move about during the night. The normal diet of the Sumatran rhino includes wild durian mangoes, figs, bamboo and plants species characteristic of disturbed forests. It will knock down saplings to get at the tender leaves. They are very fond of salt licks and each territory will include one.
  • The Sumatran rhinoceros is the smallest and rarest rhinoceros species. There are thought to be only 300 animals still in existence and the IUCN has put it on its critically endangered list in 1996. These survive in very small and scattered populations, their habitat fragmented into smaller and smaller pieces by encroaching human populations. The number of Sumatran rhinos has declined 50% due to poaching in the last 10 years. There are no signs that the situation is stabilizing. Efforts have been made by IUCN to set up a 3 year program for the protection to the Sumatran rhino in Indonesia and Malaysia in the wild. They are seeking to extend the program, whose funding ended in 1998. Captive breeding programs have also been set up, but have not been very successful. Since 1984 40 rhinos have been captured to participate in breeding programs, but 19 of these have died. Artificial insemination efforts have also not been very successful. These failures were the result of lack of knowledge of the diet and reproduction of the Sumatran rhinoceros. Experience so far has shown that the rhinos need larger enclosures with more natural conditions. Time is running out as efforts to save the Sumatran rhinoceros from extinction continue.
  • The Toco Toucan is the largest of the toucans. It can get to about twenty-four to twenty six inches in length. Its bill is brightly colored orange and black and can get to about eight inches in length. The Toco Toucan weighs about ten to seventeen ounces. The Toucan's massive bill is not as heavy as it looks; it has a hard outside and a hollow inside. A bright blue patch of blue skin surrounds the eye.
  • ifty degrees North to fifteen degrees South, and thirty-five degrees to sixty-five degrees in
  • The Wagler's pit viper lives in trees of the Southeast Asian rainforest. The climate in the rainforest is wet and humid and it rains a lot. During the wet season, or monsoon season, it
  • Chimpanzees are about 3 to 5 feet tall and weigh from 99 to 176 pounds. They have black hair. Adults are very often bald, usually a triangle on the forehead of the male, and more complete baldness in females. Their faces are hairless. Infants have pink faces which turn darker with age. Although chimpanzees have no tail, infants have a white tail tuft.
  • Africa Forest Elephant Bengal Tiger Chimpanzee Common Palm Civet or Musang Dawn Bat Golden Lion Tamarin Harpy Eagle Jambu Fruit Dove King Cobra Kinkajou Linn's Sloth Orangutan Proboscis Monkey Red-shanked Douc Langur Silvery Gibbon Slender Loris Sumatran Rhinoceros Toco Toucan Vampire Bat Wagler's Pit Viper
    • Gurupranav G
       
      This is just beautiful. If you want to know about some of the animals that live in tropical rainforests, well just click on one of the names and you'll find out about it. one example is to your right . This is a piece of information on the African Forest Elephant, which can also be called the Pygmy elephant, as it says here. Maybe you would want to find out about that animal.
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    Rino Info
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    Elephant Info
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    very good animal info
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    chimpanzees
Gurupranav G

Art in ancient Greece - Wikipedia, the free encyclopedia - 0 views

  • The arts of ancient Greece have exercised an enormous influence on the culture of many countries, particularly in the areas of sculpture and architecture.
    • Gurupranav G
       
      Useful info on greek art
  • There were several interconnected traditions of painting in ancient Greece. Due to their technical differences, they underwent somewhat differentiated developments. Not all painting techniques are equally well represented in the archaeological record.
  • The most respected form of art, according to authors like Pliny or Pausanias, were individual, mobile paintings on wooden boards, technically described as panel paintings. The techniques used were encaustic (wax) painting and tempera. Such paintings normally depicted figural scenes, including portraits and still-lifes; we have descriptions of many compositions. They were collected and often displayed in public spaces. Pausanias describes such exhibitions at Athens and Delphi. We know the names of many famous painters, mainly of the Classical and Hellenistic periods, from literature (see expandable list to the right). Unfortunately, due to the perishable nature of the materials used and the major upheavals at the end of antiquity, not one of the famous works of Greek panel painting has survived, nor even any of the copies that doubtlessly existed, and which give us most of our knowledge of Greek sculpture. The most important surviving Greek examples are the fairly low-quality Pitsa panels from circa 530 BC, and a large group of much later Graeco-Roman archaeological survivals from the dry conditions of Egypt, the Fayum mummy portraits, together with the similar Severan Tondo. Byzantine icons are also derived from the encaustic panel painting tradition.
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  • The tradition of wall painting in Greece goes back at least to the Minoan and Mycenaean Bronze Age, with the lavish fresco decoration of sites like Knossos, Tiryns and Mycenae. It is not clear, whether there is any continuity between these antecedents and later Greek wall paintings. Wall paintings are frequently described in Pausanias, and many appear to have been produced in the Classical and Hellenistic periods. Due to the lack of architecture surviving intact, not many are preserved. The most notable examples are a monumental Archaic 7th century BC scene of hoplite combat from inside a temple at Kalapodi (near Thebes), and the elaborate frescoes from the 4th century "Grave of Phillipp" and the "Tomb of Persephone" at Vergina in Macedonia[1], sometimes suggested to be closely linked to the high-quality panel paintings mentioned above. Greek wall painting tradition is also reflected in contemporary grave decorations in the Greek colonies in Italy, e.g. the famous Tomb of the Diver at Paestum. Some scholars suggest that the celebrated Roman frescoes at sites like Pompeii are the direct descendants of Greek tradition, and that some of them copy famous panel paintings.
  • There were several interconnected traditions of painting in ancient Greece. Due to their technical differences, they underwent somewhat differentiated developments. Not all painting techniques are equally well represented in the archaeological record. [edit] Panel painting [show] List of known Ancient Greek painters One of the Pitsa panels, the only surviving panel paintings from Archaic Greece.   Agatharchus Antiphilus Apelles Apollodorus (painter) Aristides of Thebes Cimon of Cleonae Echion (painter) Euphranor Eupompus Melanthius Nicomachus of Thebes Panaenus Parrhasius Pausias Polyeidos (poet) Polygnotus Protogenes Theon of Samos Timarete Timomachus Zeuxis and Parrhasius The most respected form of art, according to authors like Pliny or Pausanias , were individual, mobile paintings on wooden boards, technically described as panel paintings . The techniques used were encaustic (wax) painting and tempera . Such paintings normally depicted figural scenes, including portraits and still-lifes ; we have descriptions of many compositions. They were collected and often displayed in public spaces. Pausanias describes such exhibitions at Athens and Delphi . We know the names of many famous painters, mainly of the Classical and Hellenistic periods, from literature (see expandable list to the right). Unfortunately, due to the perishable nature of the materials used and the major upheavals at the end of antiquity, not one of the famous works of Greek panel painting has survived, nor even any of the copies that doubtlessly existed, and which give us most of our knowledge of Greek sculpture. The most important surviving Greek examples are the fairly low-quality Pitsa panels from circa 530 BC, and a large group of much later Graeco-Roman archaeological survivals from the dry conditions of Egypt, the Fayum mummy portraits , together with the similar Severan Tondo . Byzantine icons are also derived from the encaustic panel painting tradition. [edit] Wall painting Symposium scene in the Tomb of the Diver at Paestum, circa 480 BC. The tradition of wall painting in Greece goes back at least to the Minoan and Mycenaean Bronze Age , with the lavish fresco decoration of sites like Knossos , Tiryns and Mycenae . It is not clear, whether there is any continuity between these antecedents and later Greek wall paintings. Wall paintings are frequently described in Pausanias, and many appear to have been produced in the Classical and Hellenistic periods. Due to the lack of architecture surviving intact, not many are preserved. The most notable examples are a monumental Archaic 7th century BC scene of hoplite combat from inside a temple at Kalapodi (near Thebes ), and the elaborate frescoes from the 4th century "Grave of Phillipp" and the "Tomb of Persephone" at Verg in a in Macedonia http://en.wikipedia.org
Thomas C

Primates - 0 views

  • Primates are a group of mammals that include prosimians, monkeys, and apes. Humans are primates, too. We are a type of ape. Most primates have hands and feet that can grasp, and many have tails. There are about 230 primate species. Most primates are found in tropical environments. The only great exception to this is humans. We live all over the planet. Almost all primates eat both plants and animals. Most primates are threatened or endangered.
    • Thomas C
       
      description on animals
  • The Big ThreePrimates belong to one of three general groups: prosimians, monkeys, and apes. ©G.Ellis/GLOBIO.org Prosimians include lemurs, tarsiers and lorises. ©G.Ellis/GLOBIO.org Monkeys include new world and old world monkeys as well as macaques and baboons. ©G.Ellis/GLOBIO.org Apes include chimpanzees, gorillas, orangutans, and humans. Prime Locations for P
    • Thomas C
       
      never knew that lorises belonged to the monkey family.
  • What Sets Primates Apart Humans are the only primates that are strictly bipedal, meaning they walk upright on two feet. Humans live all over the planet in almost every environment. ©G.Ellis/GLOBIO.org As primates evolved over the past 50-60 million years, two important things happened. 1) Their faces flattened and the eyes moved to the front of the head, giving them binocular vision. 2) They developed hands with separate fingers and opposable thumbs. This allowed them to grasp and hold on to branches and other objects. These two important developments make primates very different from all
    • Thomas C
       
      Humans are primates?
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  • other mammals.
    • Thomas C
       
      humans are primates?
  • Adult primates come in many different sizes. The pygmy marmoset is the smallest and weighs only 70 g. The largest primate is the gorilla. It may weigh as much as 181 kg!  Primate species live for different lengths of time, depending on their size. The mouse lemur is very small and lives about eight years. Chimpanzees, which are quite large, can live as long as some humans.
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    Hi guys
Elizabeth B

Elephants - 0 views

  • Elephants are the largest land animals. They can weigh over 6,000 kg, or more than the weight of four cars! The one feature that makes an elephant unmistakable is its long trunk. A trunk is an elephant's best tool for sucking up water, digging, grabbing, lifting, sniffing, and breathing. The trunk even has a fingerlike tip that can flick dirt from an elephant’s eye or pick up a single blade of grass. There are three species of elephants. Two species live in Africa and one lives in Asia. All three species are endangered.
  • Asian elephants have an arched body shape. They have triangular ears that do not reach their shoulders and two bumps on their foreheads. Their trunks have a single lip on the upper tip of the trunk. Male Asian elephants are 2-3.5 m tall. Their average weight is about 5,400 kg. Females average about 2.35 m tall and weigh about 2,700 kg. Often, only males have tusk
  • Elephants live in social groups called herds. Herds usually have about 10 to 20 members. Sometimes many herds will meet and form “super herds” of 100 or more elephants. Herds consist mainly of females that are related to each other. A typical herd might include mothers, daughters, aunts, and grandmothers, and a few young males. The oldest female is the herd’s matriarch. She leads the herd to water and finds food and a place to rest. There are also smaller bachelor herds that are made up of adult males.
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  • oung male elephants leave to join a bachelor herd when they are about 11-years-old. Female elephants, however, stay with their mother’s herd for life. Elephants keep growing their whole lives. A male may grow to be twice as large as a female of the same age. In the wild, elephants live to be about 60-years-old.
  • People have always been amazed at the great size and strength of elephants. Long ago, elephants were sometimes used on the battlefield. Soldiers riding atop them would charge at the enemy. The sight of a giant elephant in armor could terrify the enemy soldiers into running away. In Asia, elephants are trained to work for people. They carry people and supplies through tropical forests and help with logging by moving giant logs from place to place. Asian elephants have even been used as taxis to carry people through slow traffic. In India, Thailand, and other Asian countries, elephants are honored as symbols of good fortune. People sometimes decorate elephants and include them as part of traditional religious ceremonies.
  • In the early 1900s, there were more than 5 million elephants in Africa and Asia. Today, there are fewer than 500,000, as a result of hunting (legal and illegal) and habitat destruction. People are the biggest threat to the survival of elephants both in Africa and Asia.
    • Elizabeth B
       
      we must save them
Yen Yu C

Introduction to Biomes - 0 views

shared by Yen Yu C on 02 Sep 09 - Cached
  • Biomes are the major regional groupings of plants and animals discernible at a global scale. Their distribution patterns are strongly correlated with regional climate patterns and identified according to the climax vegetation type. However, a biome is composed not only of the climax vegetation, but also of associated successional communities, persistent subclimax communities, fauna, and soils.
    • Yen Yu C
       
      -what biomes are -introduction -what it is composed from
  • The global distribution pattern: Where each biome is found and how each varies geographically. A given biome may be composed of different taxa on different continents. Continent-specific associations of species within a given biome are known as formations and often are known by different local names. For example,the temperate grassland biome is variously called prairie, steppe, pampa, or veld, depending on where it occurs (North America, Eurasia, South America, and southern Africa, respectively). The general characteristics of the regional climate and the limitations or requirements imposed upon life by specific temperature and/or precipitation patterns. Aspects of the physical environment that may exert a stronger influence than climate in determining common plant growthforms and/or subclimax vegetation. Usually these factors are conditions of the substrate (e.g., waterlogged; excessively droughty, nutrient-poor) or of disturbance (e.g., periodic flooding or burning). The soil order(s) that characterize the biome and those processes involved in soil development. The dominant, characteristic, and unique growthforms; vertical stratification; leaf shape, size, and habit; and special adaptations of the vegetation. Examples of the last are peculiar life histories or reproductive strategies, dispersal mechanisms, root structure, and so forth. The types of animals (especially vertebrates) characteristic of the biome and their typical morphological, physiological, and/or behavioral adaptations to the environment.
  • The global distribution pattern: Where each biome is found and how each varies geographically. A given biome may be composed of different taxa on different continents. Continent-specific associations of species within a given biome are known as formations and often are known by different local names. For example,the temperate grassland biome is variously called prairie, steppe, pampa, or veld, depending on where it occurs (North America, Eurasia, South America, and southern Africa, respectively). The general characteristics of the regional climate and the limitations or requirements imposed upon life by specific temperature and/or precipitation patterns. Aspects of the physical environment that may exert a stronger influence than climate in determining common plant growthforms and/or subclimax vegetation. Usually these factors are conditions of the substrate (e.g., waterlogged; excessively droughty, nutrient-poor) or of disturbance (e.g., periodic flooding or burning). The soil order(s) that characterize the biome and those processes involved in soil development. The dominant, characteristic, and unique growthforms; vertical stratification; leaf shape, size, and habit; and special adaptations of the vegetation. Examples of the last are peculiar life histories or reproductive strategies, dispersal mechanisms, root structure, and so forth. The types of animals (especially vertebrates) characteristic of the biome and their typical morphological, physiological, and/or behavioral adaptations to the environment.
    • Yen Yu C
       
      understand the nature of earth's major biomes
jack parker

Rainforest Destruction - 0 views

  • The immediate causes of rainforest destruction are clear. The main causes of total clearance are agriculture and in drier areas, fuelwood collection. The main cause of forest degradation is logging. Mining, industrial development and large dams also have a serious impact. Tourism is becoming a larger threat to the forests.
    • Gurupranav G
       
      A little useful for my Q4
    • jack parker
       
      useful for my exibition
    • Shaian R
       
      How can we save the rainforest from destrution
  • The creation of national parks has undoubtedly helped to protect rainforests. Yet, as national parks are open to the public, tourism is damaging some of these areas. Often, national parks are advertised to tourists before adequate management plans have been developed and implemented. Inadequate funding is allocated for preservation of forests by government departments. Governments see tourism as an easy way to make money, and therefore tourism is encouraged whilst strict management strategies are given far less government support. Ecotourism, or environmentally friendly tourism, should educate the tourists to be environmentally aware. It should also be of low impact to its environment. Unfortunately, many companies and resorts who advertise themselves as eco-tourist establishments are in fact exploiting the environment for profit. In Cape Tribulation, Australia, for example, the rainforest is being threatened by excessive tourism. Clearing for roads and pollution of waterways are two of the major problems in this area. The Wet Tropics Management Authority which oversees the surrounding World Heritage Area is promoting tourism to the area before any management plans have been formulated, before any effective waste management strategy has been devised and before any ecofriendly power alternatives have been fully explored.
    • Gurupranav G
       
      Possibly useful for my Q4
  • ...2 more annotations...
  • The immediate causes of rainforest destruction are clear. The main causes of total clearance are agriculture and in drier areas, fuelwood collection. The main cause of forest degradation is logging. Mining, industrial development and large dams also have a serious impact. Tourism is becoming a larger threat to the forests.
  • 5 Large Dams In India and South America, hundreds of thousands of hectares of forests have been destroyed by the building of hydro-electric dams. It was the dominant view that new dams had to be built or otherwise these countries would suffer an energy crisis. However, a recent study by the World Bank in Brazil has shown that 'sufficient generating capacity already exists to satisfy the expected rise in demand for power over the medium term, provided that the energy is used more efficiently' (WRM). The construction of dams not only destroys the forest but often uproots tens of thousands of people, destroying both their land and their culture. The rates of waterborne diseases increase rapidly. Downstream ecosystems are damaged by dams which trap silt, holding back valuable nutrients. Reduced silt leads to coastal erosion. The sheer weight of water in dams has in Chile, Zimbabwe, and Greece led to earthquakes. The irrigation and industrial projects powered by dams lead to further environmental damage. Irrigation leads to salination of soils and industry leads to pollution. Solutions: Aid organisations like the World Bank have traditionally favoured spectacular large-scale irrigation and hydro-electric projects. In all cases when such projects are proposed, there has been massive opposition from local people. Reform of the World Bank and other such organisations, and support for campaigns against large-scale dams is needed.
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