Biology

What are the tiny air sacs in the lungs called?

More Questions from Biology
What group of animals has hollow bodies and stinging cells?
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What are the thin bones that protect your lungs and heart?
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Which of these is a natural response to a change in temperature for a black bear?
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Which of these senses do you use to tell what color an object is?
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What type of worm is an earthworm?
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Which of these things is not living?
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What characteristic could show that a bird might be ready to reproduce?
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Which of the following fish can adapt to both salt water and freshwater?
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