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What is ventilation?
O The exchange of oxygen and carbon dioxide
O The physical act of breathing
O The creation of oxygen cells
O The circulation of blood

Respuesta :

swaswasure

Answer:

Ventilation is the physical act of breathing.

r1shi

Answer: The physical act of breathing

Explanation: Ventilation, or breathing, is the movement of air through the conducting passages between the atmosphere and the lungs. The air moves through the passages because of pressure gradients that are produced by contraction of the diaphragm and thoracic muscles. - Dr. Klamburt

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