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Svetlanka [38]
3 years ago
7

Explain the two different patterns of circulation found in vertebrates.

Biology
1 answer:
Eva8 [605]3 years ago
4 0

Answer:

Land vertebrates developed lungs, a new vein (the pulmonary vein) to take blood from them to the heart, and a double circulation, whereby the heart is effectively divided into two halves—one-half concerned with pumping incoming deoxygenated blood from the body to the lungs and the other with pumping oxygenated blood .

Explanation:

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