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Bezzdna [24]
3 years ago
8

Through the walls of the is where the exchange of oxygen and carbon dioxide takes place

Biology
1 answer:
mixas84 [53]3 years ago
5 0
The exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.  

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