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goblinko [34]
3 years ago
12

Respiration occurs at which of the following structures of the respiratory system?

Biology
1 answer:
9966 [12]3 years ago
7 0

Explanation:

The answer is d..because the alveoli inside the lungs absorb oxygen..then cells transport oxygen to the blood stream which in turn oxygenate all the cells of the animal body..

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