Question

what is respiration?​

Answer 1

Answer:

In physiology, respiration is the movement of oxygen from the outside environment to the cells within tissues, and the removal of carbon dioxide in the opposite direction. ... In contrast, exhalation (breathing out) is usually a passive process.

Answer 2

Answer:

The movement of oxygen from the outside environment to the cells within tissues ,and the removal of carbon dioxide in the opposite direction.

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