Answers

2015-03-31T08:43:37+05:30
Double circulation is a process during which blood passes twice through the heart during one complete cycle. In the human circulatory the pathway of blood from the heart to the rest of the body and back to heart is called systemic circulation and the pathway of blood from the heart to the lungs and back to heart is called pulmonary circulation. These two type pf circulation taken together makes double circulation.  

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2015-03-31T09:57:18+05:30
It is kind of blood circulation system in which the blood flows through the heart 2 times taking turns. here we can notice that  the pulmonary circulation is separate from the systemic circulation.
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