Diffusion occurs because of the movement of molecules from the region of higher concentration to the region of lower concentration. This movement of molecules occurs due to a thermal motion. Diffusion normally occurs between two compartments having difference in concentration. In case of fluid it moves from the region of higher concentration to the region of concentration until a balance is reached. The process of diffusion is very important for the humans as well. The oxygen that humans breathe in gets diffused with the blood.
Diffusion occurs because of the random motion of molecules. ;
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration due to random motion. It is essential for processes like gas exchange in biology. Equilibrium is reached when concentrations equalize.
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