Give one reason why multicellular organisms require special organs for exchange of gases between their body and environment
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because the body of multicellular organism is very big and complex so only by breathing there is deficiency of oxygen in the body because by respiration oxygen take 2 years to reach in our whole body
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because the body of multicellular organism is very big and complex so only by breathing there is deficiency of oxygen in the body because by respiration oxygen take 2 years to reach in our whole body
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