Why Do Fish Have Scales?
Why Do Fish Have Scales? Most fish are covered with a layer of flat scales, which overlap each other like the shingles on a roof. The hard scales form a protective...
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Why Does Poison Ivy Itch?
Why Does Poison Ivy Itch? Woods, seashores, even parks and suburbs contain poison ivy. Never touch poison ivy. It can make your skin itch and blister. The poison that...
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How Do Chameleons Change Color?
How Do Chameleons Change Color? The chameleon is famous for changing color. Some can change from green to brown, or to red or yellow. This little lizard can change...
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How Does a Scab Form?
How Does a Scab Form? If you accidentally cut your finger, blood flows into the wound from tiny blood vessels in your skin. But your finger doesn’t bleed for...
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Why Does Hair Turn Gray?
People with gray or white hair didn’t always have hair that color. Their hair may once have been black or brown, light blond or flaming red. Your hair grows from...
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