What is double circulation? Why it is necessary ? ........ who will give right answer I will make him brainlist.
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The human circulatory system is a double circulatory system. It has two separate circuits and blood passes through the heart twice: the pulmonary circuit is between the heart and lungs. the systemic circuit is between the heart and the other organs.It is necessary for a human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system more efficient and helps in maintaining constant body temperature.
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it is necessary for a human being two separate oxygenated and deoxygenated blood because this make their circulatory system more efficient and helps in maintaining constant body temperature .
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