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Why double circulation is necessary in …

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Why double circulation is necessary in human beings
  • 3 answers

Risky Thakur 6 years, 3 months ago

Because human beings required much energy to carry out their metabolism as well as bioloogical activities.

Milan Pawar 6 years, 3 months ago

it prevents mixing of impure and pure blood

Rohit Kr 6 years, 3 months ago

for purification of deoxygenated blood
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