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Hey every one! i got the assignment done! thanks for all your help : )

thank you, i have done most of 5 and im working on 6 now

Any mixture from the atmosphere, lithosphere, hydrosphere or bioshpere will di

I need help plz! im in yr 11 and i need to do a small assignment but i am having heaps of trouble: I need to find the following answers to these questions regrading NITROGEN. PLz if you could help in any way it would be much appreciated! 1. The name of the naturally occurring mixture. 2...