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In the lungs, oxygen diffuses into the bloodstream, and carbon dioxide diffuses out through _[blank]_. veins alveoli arteries kidneys
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In the lungs, oxygen diffuses into the bloodstream, and carbon dioxide diffuses out through _[blank]_.

veins


alveoli


arteries


kidneys

User HussienK
by
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2 Answers

4 votes

Answer:

The alveoli

Step-by-step explanation:

User Tom Kidd
by
4.5k points
5 votes

the answer is avoli, because they are the smallest part of the lungs so the carbon dioxide goes back through the blood stream to be reoxygenated by the pulmonary system.

User Laarsk
by
5.2k points
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