Why are the lungs made up of these

Biology

1 answer:

STatiana [176]2 years ago

8 0

Answer:

because in a giant air sack, there would be no way for the capillaries to exchange gasses, and we would suffocate

Explanation:

the alveoli can only exchange one molecule at a time, they go from our lungs to our bloodstream and not mixing them up.

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