Large SA:V increase rate of diffusion, More surface for diffusion to happen across, Small SA:V decrease rate of diffusion, Less surface for diffusion to happen across, High temperature increases rate of diffusion, Particle have more energy, Low temperature increases rate of diffusion, Particle have less energy, The higher the concentration gradient increases rate of diffusion, Particle move from higher concentration faster, The low the concentration gradient decreases rate of diffusion, Particle move from higher concentration slower, Short distance increases rate of diffusion, It takes less time for particle to move across, Long distance decreases rate of diffusion, It takes more time for particle to move across.

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