Biology

What is the outer skeleton of organisms such as spiders and insects called?

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What is the sticky part of the pistil called?
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What is a name for a substance that your body needs for energy and growth?
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Which of the following is a warm-blooded animal?
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In what habitat might an animal with a thick, warm coat live?
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Which of the following mimics a monarch butterfly?
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What does the sea urchin use to help protect itself?
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Which vitamin enhances the absorption of calcium from foods?
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What do you count on a tree to tell how old it is?
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