Humans breathe in order to deliver oxygen to individual cells. Oxygen molecules are attached to and carried through the body by A. blood cells. B. the lungs. C. blood vessels. D. the diaphragm.

Respuesta :

Answer:

A. blood cells

Explanation:

Most oxygen carried in the blood is bound to the protein hemoglobin in red blood cells.

Answer: The answer is A, hope it helps :P

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