Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds? ( 2 )
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: In birds and mammals have a double circulation system where both the oxygenated and deoxygenated blood maintains separate. ... It is necessary for them to separate oxygenated and de-oxygenated blood so that their circulatory system is more efficient and can maintain their constant body temperature.
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in oxygenated blood oxygen is. there and In deoxygeneted oxygen is not there
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