Question

what is double circulation?​

Answer 1

In human body the blood passes through the heart two times.

First the deoxygenated blood from left oracle and ventricle and then it goes to lungs.

Second time the oxygenated blood comes to right Oracle and ventricle from lungs.

Answer 2

The process in which blood flows twice through the heart... Means oxygenated and de oxygenated blood.