3 years ago

Can someone help me

2 answers:

5 0

Don’t copy in exam or u will suffer later

Yuri [45]3 years ago

5 0

Abiotic :non living
Biotic=living or once living

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Each alveolus is cup-shaped with very thin walls.
It’s surrounded by networks of blood vessels called capillaries that also have thin walls.
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The alveoli are just one cell in thickness, which allows the gas exchange of respiration to take place rapidly.

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Stolb23 [73]

The answer maybe C ..

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