Question

what is double circulation ? How does it
gives evolutionary advantages to aves
and mammals ?​

Answer 1

HERE IS UR ANSWER DEAR

In mammals and birds, the heart is also divided into four chambers: two atria and two ventricles (figure d). The oxygenated blood is separated from the deoxygenated blood, which improves the efficiency of double circulation and is probably required for the warm-blooded lifestyle of mammals and birds.

Answer 2

Answer:

I kept a pic...

Explanation:

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