2. With each beat, the heart pumps: a) blood rich in oxygen to the lungs and blood rich in carbon dioxide to the body. b) blood rich in carbon dioxide to the lungs and blood rich in oxygen to the body.

2. With each beat, the heart pumps:

a) blood rich in oxygen to the lungs and blood rich in carbon dioxide to the body.
b) blood rich in carbon dioxide to the lungs and blood rich in oxygen to the body.
c) blood rich in carbon dioxide to the lungs and back to the heart.
d) blood rich in oxygen to the lungs and then back to the heart.

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2. With each beat, the heart pumps: a) blood rich in oxygen to the lungs and blood rich in carbon dioxide to the body. b) blood rich in carbon dioxide to the lungs and blood ric…

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