Explain double circulation in human beings ? Why it is necessary.

1.	Explain double circulation in human beings ? Why it is necessary.
Answer» Join betternation.xyz This is a site where u can have a lot of friends and fun ? ? ? During a single cycle blood goes twice in the heart which is known as double circulation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature. I HOPE IT HELPS YOU During a single cycle blood goes twice in the heart which is known as double circulation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.

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