mammls and birds have four chamber heart ,? why
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this is because they need warm blood to feed their young ones/offsprings...
in order to maintain their body temperature and sustain on earth ..
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Dear mates here is your answer
➡️The heart in birds and mammals is divided into four parts, called chambers. The job of the heart is to deliver oxygen and nutrients to the body through the blood. When the blood is in the body, the oxygen is used up to make energy. ... The left atrium pumps blood to the left ventricle, the strongest chamber of the heart.
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