define diffusion how doesthe gas like carbon dioxide or oxygen move in

1.	define diffusion how doesthe gas like carbon dioxide or oxygen move in or out the cell
Answer» Diffusion is the movement of substances from a region of higher concentration to a region of lower concentration. When it happens through the cell membrane of the cell it is called diffusion. If more oxygen is or carbon dioxide is present outside the cell, it would move in the cell and vice versa

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