Where Does Mold Come From?
Food that is left in a warm, damp place for several days often becomes covered with a fuzzy patch of mold. Mold is really a tiny, simple liv
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Warm
What Causes Rain?
What Causes Rain? You know that rain falls from clouds. Water is constantly evaporated from the earth’s surface by the warmth of the sun. Th
Is Breathing Cold Air Dangerous?
Breathing cold air isn’t dangerous. Your body has special mechanisms in place to make sure that all the air that reaches your lungs is plent
Why Do You Shiver When You Are Cold?
Why Do You Shiver When You Are Cold? When your body gets cold you can help it warm up by doing some kind of exercise. If you do not do that,
What Causes a Mirage?
What Causes a Mirage? Desert travelers often tell of seeing distant pools of water, only to have the water disappear when they drew near. Th