Biology
What was the dominant invertebrate of Mesozoic seas?
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What is a name for the place where an animal lives?
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Some insects in the north produce what chemical to serve as a natural antifreeze in the winter?
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What is the name for the pigment found in your skin and hair that gives them color?
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Which of the following organs is not used during digestion?
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The India rubber man at the carnival may be suspected of having what disease?
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