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2 votes
What are alveoli and what do they do?

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User Mato
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2 Answers

6 votes
are tiny sac with our lungs that allow oxygen and carbon dioxide to move between the lungs and blood stream
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User Lourenco
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6 votes
Alveoli are tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream
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User Eray Diler
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