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Greetings my fellow IB DPs,

I am inexperienced at Chemistry and have a 4 in general Chemistry SL, as well as being new to this website I would love some seasoned knowledge from y'all IBees. I need help to find research on how to calculate the exact nitrogen levels in soil. If you may post any pdf documents you know or any personal insights and knowledge I will be very lucky and extremely grateful to you.


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