Question

Why mammals have 4 chambered heart compared to fishes having 2 chambered heart?​

Answer 1

Because their mobility or locomotion is more than that of fishes

They have Lungs

PLS mark as BRAINLIEST

Answer 2

By keeping these two stages of circulation separate, the 4-chambered heart maximizes oxygen utilization.Only oxygen-rich blood goes to the body, and only blood in need of fresh oxygen goes to the lungs. Birds andmammals have these four chambers. ... Fish have a simple, 2-chambered heart that serves their needs