Question

Why human beings have double circulation?
PLS ANSWER IT SOON. VERY URGENTT.​

Answer 1

Answer:

Hey There,

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.

HOPE THIS HELPS YOU.

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Answer 2

Answer:

this is your answer

Thank you