Biology

What are the tiny air sacs in the lungs called?

More Questions from Biology
Which of the following animals might a heron eat?
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Which of following words means "to die"?
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Which of these does food in the meat group mainly provide?
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What part of the plant does most of the photosynthesis?
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Where in the body is blood produced?
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Which of the following is the smallest?
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Which is not a system of the human body?
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What part of the blood helps clotting?
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