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Minchanka [31]
3 years ago
15

The alveoli are tiny air sacs in the lung. They have a relatively large surface area and thin walls. This structure allows –

Biology
1 answer:
oksian1 [2.3K]3 years ago
7 0

Basically let's you breathe easier.

Explanation:

The alveoli are only one cell thick. Which allows relatively easy passage of oxygen and Carbon Dioxide between the alveoli and blood vessels. (Capillaries

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