Question

What is diffusion of air?very short​

Answer 1

Answer:

Diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room. Diffusion.

Answer 2

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"Diffusion" is the gradual movement/dispersion of concentration within a body, due to a concentration gradient, with no net movement of matter.

Secondly there a "diffusion" process. The air arriving in the alveoli has a higher concentration of oxygen than the “stale” air in the alveoli.