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What do you mean by double circulation and why it is essential ? |
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Answer» हमारे दिल मे खून का दो बार आना ही double circulation It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature. Why?? Flowing blood through heart twice. It is essential to oxigenate blood. |
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