The rain that falls on the land contains some dissolved carbon dioxide from the surrounding air. This causes the rainwater to be slightly acidic due to carbonic acid (which forms from carbon dioxide and water).
Contents contributed and discussions participated by Regina Cantu
Why is the ocean salty? - 2 views
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As the rain erodes the rock, acids in the rainwater break down the rock.
Why is the ocean salty? - 1 views
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The ocean is also salty from rainwater that falls onto rocks or land, picks up some salt in the earth, and then trickles down into the ocean! There are also some places in the ocean floor where salty gases and minerals from within the Earth get released into the ocean!
Why are Oceans Salty? - EnchantedLearning.com - 0 views
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As water flows in rivers, it picks up small amounts of mineral salts from the rocks and soil of the river beds.
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but the salt remains dissolved in the ocean - it does not evaporate. So the remaining water gets saltier and saltier as time passes.
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This very-slightly salty water flows into the oceans and seas. The water in the oceans only leaves by evaporating (and the freezing of polar ice),
Bartolomeu Dias - 0 views
Bartolomeu Dias -- Encyclopedia Britannica - 0 views
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Bartholomew Dias Info
Bartolomeu Dias - Biography - Explorer - Biography.com - 0 views
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Bartolomeu Dias Biography Explorer (c. 1450–1500)
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Bartolomeu Dias led the first European expedition round the Cape of Good Hope in 1488.
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Bartolomeu Dias was sent by Portuguese King John II to explore the coast of Africa and find a way to the Indian Ocean.
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Bartholomew Dias info.
BrainPOP | Immune System - 0 views
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Our Immune system is the system that helps us fight off germs and viruses, if Our immune system wouldn't exist, we would be sick more often.
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When you have a disease you already had, your immune system remembers and knows how to fight it off.
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BrainPOP Jr. | Colds and Flu - 0 views
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If you have a fever, it might be that your body is fighting of a cold of a virus. So the fever actually helps you sometimes.
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While your body is fighting the germs that may cause you an Illness, you may feel tired, down, and sick.
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BrainPOP | Viruses - 2 views
Why Do We Get Sick? | The Gilead Institute - 1 views
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The disease process started long before it was diagnosed. It can start as long as ten or twenty years before you know you have the disease. Usually the disease process starts when a sufficient amount of factors come together to start you down the road to having a diagnosable disease.
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If the disease process continues uninterrupted, eventually it will come to a point where you will be officially diagnosed with a disease.
Why do we get sick? - HowStuffWorks - 2 views
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As an example, think of a person who has a cold. That person may cough into his or her hand and then touch a doorknob, thus placing the cold virus on that doorknob. The virus may die on the doorknob, but it's also possible that the next person to touch the doorknob will pick it up. If that person then touches food with the unwashed hand and consumes the food, the virus is now inside the body.
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The earliest physicians thought that illness and disease were a sign of God's anger or the work of evil spirits. Hippocrates and Galen advanced the concept of humorism, a theory which held that we get sick from imbalances of the four basic substances within the human body, which they identified as blood, phlegm, black bile and yellow bile. Paracelsus, a Renaissance-era physician, was one of the first to posit that sickness comes from outside sources, rather than from within.Today, we know that there are two major kinds of diseases: infectious and non-infectious.
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For example, if a person has gotten a cold and sneezes into their hand, then suddenly they touch the light switch, They leave the cold there, it may also be that the cold virus dies there, but it may also be that the next person who touches the light switch gets it in their hands. If they go to eat, and they don't wash their hands and they touch what they are going to eat they get it in their mouth and now they have the cold.
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9 Childhood Illnesses: Get the Facts - 1 views
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To prevent Illnesses, you may as well want to wash your hands as much as possible. This way you will reduce the chance of you getting a virus or a cold.
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There are many viruses from germs that you can get.
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Regina Cantu