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How does the circulatory system work at the organ level? Nutrients are delivered throughout the body. Cardiac muscle contracts. The heart pumps the blood. Blood cells carry nutrients.
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How does the circulatory system work at the organ level?

Nutrients are delivered throughout the body.

Cardiac muscle contracts.

The heart pumps the blood.

Blood cells carry nutrients.

User Shawnett
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Answer:

the third one

Step-by-step explanation:

i took the test honey boo

User Efferalgan
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The heart pumps the blood.
User DainDwarf
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