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    • Thread Starter

    I have my B2 GCSE tomorrow and I'm just going over my notes. Would some kind person please help me out with diffusion? I understand the basics of what it is but I'm struggling with the different substances for animals and plants. Thank you in advance!😊

    Sorry, I know this is too late: diffusion is the net movement of particles from an area of high concentration to an area of low concentration down a concentration gradient.

    Hope you can use this on the next paper.
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