Question

What is breathing ? What is breathing ?​

Answer 1

Answer:

Breathing: The process of respiration, during which air is inhaled into the lungs through the mouth or nose due to muscle contraction and then exhaled due to muscle relaxation.

Answer 2

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What is breathing ? What is breathing ?

It is a physical process of intake of air ( rich in O_{2) ; inspiration ) and removal of air ( rich in Co_{2} ; expiration.

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