Question

What is double circulation?
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Answer 1

Answer:

The oxygenated blood from the lungs returns to the heart, which is pumped again into different parts of the body by the heart. Thus, the blood passes twice through the heart making one complete round through the body. This is called double circulation.

Explanation:

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Answer 2

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What is Double Circulation??

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Double circulation is the process when blood passes twice through the heart during one complete cycle.