why is double circulation of blood necessary in human beings?
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♛┈⛧┈┈•༶It is necessary for a human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system more efficient and maintains constant body temperature.
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it is necessary for a human being to separate oxygenated and de-oxygenated blood because this make their circulatory system more efficient and maintain is const9 body temperature.
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