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Biology help asap

6C1427A5-38F3-4A3B-9B56-44F8DFE969FE.jpegCan someone explain how’s it B ? How’s there no net diffusion ?
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Pls help
is this a topic you’ve learned
Reply 3
Original post by Anniemo004
is this a topic you’ve learned

Yes , but I don’t understand why is there no net diffusion into X for P and Q

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