Group items tagged

Hazardous chemicals are dangerous because they are flammable, explosive, strong irritants, sensitizers, or acids and bases.

can be as dangerous as any other bear

two and three feet tall on all four legs, and reach four to six feet in length

males are heavier than females, weighing up to 250 pounds. Females rarely reach 220 pounds

reported zoo pandas as old as 35 years.

99 percent bamboo

rare occasions, other grasses and animal carcasses

In zoos, giant pandas eat bamboo, sugar cane, rice gruel, a special high-fiber biscuit, carrots, apples, and sweet potatoes.

Offspring may stay with their mothers from one and a half to three years

usually eats sitting upright

digestive system is more like that of a carnivore than an herbivore

from 20 to 40 pounds of bamboo each day

10 to 16 hours a day foraging and eating

wild panda spends much of its day resting, feeding, and seeking food

At birth, a panda cub is helpless

newborn weighs three to five ounces

Pink, hairless, and blind, the cub is 1/900th the size of its mother

microbats eat insects, blood (small quantities of the blood of animals), small mammals, and fish

Mother bats usually have only one offspring per year

they are viviparous

Young microbats become independent at the age of 6 to 8 weeks

At the age of two years, bats are sexually mature

megabats not until they are four months old

A single bat can live over 20 years

Most microbats are active at night or at twilight

Bats rarely fly in rain

the rain interferes with their echo location

Only three species sustain themselves with blood.

Only 0.5% of bats carry rabies

Bats have very small teeth and can bite a sleeping person without being felt

Bats are closely associated with vampires

Bats are also a symbol of ghosts, death, and disease

Chinese lore claims the bat is a symbol of longevity and happiness

the bat is a trickster spirit

In Western Culture, the bat is often a symbol of the night and its foreboding nature

A measure of the success of bats is their estimated total of about 1,100 species worldwide, accounting for about 20 percent of all mammal species.

Physical growth in stature and weight occurs over the 15-20 years following birth, as the individual changes from the average weight of 7 1/2 pounds and length of 20" at full-term birth to full adult size. As stature and weight increase, the individual's proportions also change, from the relatively large head and small torso and limbs of the neonate, to the adult's relatively small head and long torso and limbs.

Newborn infants do not seem to experience fear or have preferences for contact with any specific people.By about 8-10 months, they go through a fairly rapid change and become fearful of perceived threats; they also begin to prefer familiar people and show anxiety and distress when separated from them or approached by strangers

Dyslexia is a significant topic in child development as it affects approximately 5% of the population (in the western world). Essentially it is a disorder whereby children fail to attain the language skills of reading, writing and spelling commensurate with their intellectual abilities.

cannot be reversed to regenerate the original fuel mass

a fuel problem does exist

If the supply of fuel is finite, not only will there be no energy supply when the fuel is exhausted

all other processes that depend on it will cease

Several factors combine to make the problem an urgent one

World population

demand for energy will also increase

coal, oil (petroleum), natural gas, uranium, and fuel wood—is limited and insufficient to sustain rapid rates of development.

debate about the exact length of time available before the effects of a worldwide shortage become apparent

shortage will occur.

geothermal energy, hydroelectric power, peat, ocean thermal energy, solar energy, tidal energy, wind power, and fuel wood.

replenish themselves naturally in a relatively short time and will therefore always be available.

Renewable energy resources

indirectly responsible for many other renewable energy sources.

ocean currents and winds are results of the uneven distribution of solar radiation over the Earth's surface

winds in turn produce waves whose energy can be utilized

windmills and wind power

ocean thermal energy, solar heating of the upper layers of the ocean produces temperature gradients that can be harnessed to generate electricity

Sun also powers the hydrologic cycle, in which ocean water is evaporated, transported over the continents, and precipitated as rain or snow to form rivers

flow energy produces hydroelectric power.

energy locked in such renewable fuel sources as wood and peat is derived from the Sun by the process of photosynthesis.

renewable energy source is geothermal energy

arises through the leakage of heat from the Earth's interior to the surface

over the entire surface of the Earth at a very low average rate, leakage is much higher in certain locations.

Yellowstone National Park

Iceland, Italy, and New Zealand.

possible to tap the heat and use it for human purposes.

Nonrenewable resources originate from two processes: (1) photosynthesis, which occurred many millions of years ago, followed by the fossilization of the plant and animal life that resulted, and (2) the formation of the Earth itself.

fossil fuels—coal, oil (petroleum), and natural gas;

produced the fuels for nuclear energy, such as uranium for fission and lighter elements for fusion

irreplaceable fuels represent an energy capital that must be invested wisely.

A cleaner-burning fuel than oil, natural gas seemed to be in abundant supply at the turn of the 21st century and, with the greatly enlarged network of gas pipelines, was rapidly growing in use.

nearly total dependence on fossil fuels and hydroelectricity ensures that efforts to solve energy problems by switching to alternative sources will have to overcome a great deal of inertia, both economic and psychological.

sources as solar power, wind power, and synthetic fuels suffer from the serious drawback that few major installations now exist.

handicapped by the engineering problems of converting the energy to a form useful to human beings.

solar energy reaches the top of the atmosphere in amounts 10,000 times greater than all human production of energy, it reaches the Earth's surface at rates of only about 80 to 250 W/m2, and considerably less on cloudy days.

arge-scale system based on solar-collector panels will be physically huge, causing problems of maintenance and land use

Wind power, wave power, and ocean-thermal-generation sources suffer from similar difficulties

urricanes cause do billions of dollars in damage, diseases cost money to treat and control and conflicts exacerbate all of these.

The ice caps melting is a four-pronged danger.

First, it will raise sea levels.

Second, melting ice caps will throw the global ecosystem out of balance

Third, temperature rises and changing landscapes in the artic circle will endanger several species of animals. Only the most adaptable will survive.

ourth, global warming could snowball with the ice caps gone

"We either reduce our CO2 emission now or many corals will be lost forever," warned Julia Marton-Lefevre, IUCN Director General.

According to the study, the Caribbean region has the highest number of highly threatened corals.

As they are home to over 25 percent of marine species -- including fish stocks -- loss of reefs could also impact coastal fishing communities.

depend on coral reefs for their livelihoods,

reef-building corals in particular were "most vulnerable to the effects of climate change".

Sea temperature rises bleach and weaken the algae that give the underwater sea life its vibrant color, and make it more susceptible to diseases.