Biology

What are the tiny air sacs in the lungs called?

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What is another name for the human skull?
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What is the name of the sugary substance that many insects get from flowers?
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What are chitterlings?
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How many chromosomes does a typical human body cell have?
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Which nutrient group is used to help grow and repair cells?
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Which of these scientists along with James Watson helped discover the DNA molecule?
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What sea mammal has gotten trapped frequently in tuna fishing nets?
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What do you count on a tree to tell how old it is?
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