why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds
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because this helps in making their circulatory system more efficient and helps on maintaining constant body temperature.
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it is necessary to separate oxygenated and deoxygenated blood in mammals and birds because it when it mixes with each other they can produce a very harmful fluid in our body and germs also so it is a very e important process in our body
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