Why Do Some Bears Sleep All Winter?
Why Do Some Bears Sleep All Winter? Many bears sleep through the coldest days of winter because they cannot find enough food. As the weather gets colder, a bear needs...
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How Does a Spider Eat?
How Does a Spider Eat? A spider does not have chewing mouth parts. It eats by sucking the body fluids of its victims. Spiders have filters that keep out solid food so...
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How Do Plants Give off Oxygen?
How Do Plants Give off Oxygen? Plants give off oxygen during the process of photosynthesis. Using green chlorophyll (which gives them their color), the leaves of plants...
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Where Does Black Pepper Come From?
Where Does Black Pepper Come From? The familiar black pepper we season our food with comes from the dried berries of the pepper vine, which grows in Indonesia and other...
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How Do We Know When We Are Hungry?
How Do We Know When We Are Hungry? Hunger begins when substances like glucose (sugar), minerals, vitamins, and amino acids are missing from the blood. Nerves in the...
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