Biology

What are the tiny air sacs in the lungs called?

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What is the largest member of the weasel family in the United States?
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What scientists study insects?
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A single piece of coiled DNA is called what?
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What type of behavior is passed on from generation to generation?
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What type of plants has tube-like cells that help move water through the plant?
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What family do dolphins, porpoises and whales belong to?
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Which animal has the fastest metabolism?
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Where is the largest snake, the anaconda, found?
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