is the physical process of exchange of gases between the body and the external environment.

Respiration

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Breathing

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Circulation

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Excretion

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Solution

The correct option is B Breathing
Breathing is the physical process of passage of air into and out of the lungs to supply the body with oxygen.

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Similar questions

Give reasons why multicellular organisms require special organ for exchange of gases b/w their body and their environment

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