Question

Define single circulation​

Answer 1

Explanation:

single circulation The type of circulatory system that occurs in fishes, in which the blood passes only once through the heart in each complete circuit of the body Compare double circulation. A Dictionary of Biology. "single circulation

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Answer 2

Explanation:

Single circulation is a type of circulation commonly seen in fishes. ... In single circulation, the blood passes through a single circuit – where blood is pumped by the heart to the gills for oxygenation, after which the blood flows to the rest of the body and back to the heart.