Question

describe double circulation in human being and why is it necessary?

Answer 1

Human heart shows double circulation. .. It is a circualtion in which blood passes twice throught the heart during one complete cardiac cycle to supply once to the body ..


Double circulation or complete separation of oxygenated and deoxygenated blood allows efficient supply of oxygen to the body which is useful in birds and mammals that have high energy needs to maintain a constant body temperature throughout the year ........ ✌✌✌

HOPE IT WILL HELP YOU. ..........

Answer 2

Answer:

Explanation:

not sure about this answer