Question

in mammals and birds oxygenated blood and deoxygenated blood get separated why

Answer 1

It is absolutely necessary to separated oxygenated and deoxygenated blood in mammals and birds. ... It is necessary in mammals and birds toseparate oxygenated anddeoxygenated blood because b this makes this circulatory system is more efficient and helps in maintaining constant body temperature.

Answer 2

mammals are highly developed organisms .
we have 2 auricles and 2 ventricles in our heart
the oxygenated blood will have to travel to different tissues and organs of the body .and the deoxygenated blood shouldnt , it should go to the lungs , which therefore gets out of our body . not blood!! but the co2
thus they are seperated