Biology, asked by likitha14, 1 year ago

why do we need to exchange oxygen and carbon dioxide

Answers

Answered by Shreyatripathi5

The exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, 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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