Question

what is single circulation and double circulation give examples​

Answer 1

Double circulation. * Blood flows only once through the heart during one cycle of passage through the body. * Blood flows twice through the heart during one cycle of passage through the body. * Occurs only in fishes.

Answer 2

Answer:

A type of circulation in which blood flows through the heart twice is called double circulation. This type of circulatory systemhas separate systemic circulation and pulmonary circulation. ... The oxygenated blood from the lungs returns to the left atrium of the heart through two pulmonaryveins, one from each lung.

Explanation:

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