Question

Why it's neccassary to keep completely separate the oxygenated and deoxygenated blood? ​

Answer 1

To keep the temperature of the body normal otherwise it will regulate very often

Answer 2

Ello user !!!!!!!!!!!

Here is your answer,

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If the oxygenated and deoxygenated blood gets mixed up in the body the amount of oxygen reaching the organs would be insufficient for their efficient working.

It is necessary in mammals and birds to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.

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