Question

what is double circulation????????​

Answer 1

Answer:

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Explanation:

The majority of mammals (including humans) utilize a double circulatory system. This means we have two loops in our body in which blood circulates. One is oxygenated, meaning oxygen rich, and the other is deoxygenated, which means it has little to no oxygen, but a lot of carbon dioxide

Answer 2

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It is called a double circulatory system because blood passes through the heart twice per circuit.