Question

The heart of amphibians and many reptiles contains a single ventricle, while the mammalian heart consists of two separate ventricles that work side by side. What advantage does the mammalian heart provide?

A. It requires very little muscular force to pump blood throughout the body.
B. It allows blood to travel in two directions through heart chambers.
C. It allows blood to be diverted from the lungs when necessary.
D. It separates oxygen-rich blood from oxygen-poor blood.

Answer 1

The answer is D

Step-by-step explanation:

I did it on pearson and its right

Answer 2

Step-by-step explanation:

D