Biology

What protein is found in the hair and nails of mammals?

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Which human body system breaks down food?
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What nutrient do girls need more of than boys when they are growing?
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What squirts into your mouth as you chew food?
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Which animal is active at night?
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What would you call an animal with three main body parts and six legs?
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The Matamata turtle is found on which continent?
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What structures hold plants in the ground?
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What are the two kinds of blood cells?
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