Question

why does the lung have many air sacs?

Answer 1

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Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. ... When you breathe in, the alveoli expand to take in oxygen. When you breathe out, the alveoli shrink to expel carbon dioxide.

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Answer 2

Answer:

The lungs have many air sacs because they are the site for the direct gas exchange with the circulatory system.

Explanation:

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