Question

Why is it necessary to separate oxygenated blood and deoxygenated blood in mammals?

Answer 1

in mammals... when oxygenated blood gets mixed with deoxygenated blood....immediate death occurs.

Answer 2

$\bf\huge\underline\blue{Question}$

Why is it necessary to separate oxygenated blood and deoxygenated blood in mammals?

$\bf\huge\underline\green{Question}$

The tissue with high metabolic rate in mammals requires rapid delivery of oxygenated nutrient rich blood. This is supported by high blood pressure. This blood pressure is maintained by double circulation,

i.e., separation of oxygenated and deoxygenated blood in mammals.