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CBSE Class 10 Answered

Describe double circulation in human beings?why is it necessary?
Asked by | 27 Aug, 2008, 10:32: PM
Expert Answer

Passing of blood two times in the heart to supply once to thee whole body is double circulation.

It is necessary to meet the high energy demands of human body.

Answered by | 27 Aug, 2008, 11:00: PM
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