Question

what is the contrast between DOUBLE and SINGLE CNS ?​

Answer 1

Answer:

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Answer 2

Answer:

SINGLE CIRCULATION:-

A circulatory system in which blood travels only once through the heart in one complete cycle of the body is called single circulation.

e.g:- it occurs in fish.

DOUBLE CIRCULATION:-

A circulatory system in which blood travels twice through the heart in one complete cycle of the body is called double circulation.

e.g:- it occurs in mammals.

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