why it is necessary to separate oxygenated and deoxygenated blood in human beings?
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humans are warm blooded . they needs high energy because they constantly required to maintain their body temperature. this separation is necessary because such a separation allows a highly efficient supply of oxygen to body cells which is required for producing a lot of energy needed by them.
sehaj48:
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Because deoxygenated blood contains harmful substances like carbonmonooxide which is dangerous for us.
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