Question

why is double ciculation of blood necessary

Answer 1

During a single cycle blood goes twice in the heart which is known as double circulation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.

Answer 2

Hello Friend..

the answer of ur question is-

Double circulation of blood is necessary in human body because it keep oxygenated and deoxygenated blood from mixing...

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