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Effectus [21]
1 year ago
11

Millions of red blood cells are in the circulation and carry ____________ from the lungs to the tissues. In most cases, every ce

ll of the body is located close to a ____________ , the small structures of the circulatory system where the majority of gas exchange occurs.
Biology
1 answer:
MrRissso [65]1 year ago
4 0

Answer:

oxygen and  capillary

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