Question

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

Answer 1

Answer:

it is necessary

Explanation:

oxygenated blood means purified blood that pumps by the heart to all body parts

deoxygenated blood that is impurity blood that receive from the body parts

Answer 2

Separation of oxygenated and deoxygenated blood allows good supply of oxygen to the body . This system is useful in animals that have high energy requirement . Mammals and birds constantly need oxygen to get energy to maintain their body temperature constant .