Here is a youtube video produced by Erin Siegel and Professor Myrna Jacobson Meyer at the University of Southern California. It explains how the input of reactive nitrogen to the environment produces a cascade of effects, and that the same atom of reactive nitrogen can be responsible for several different environmental impacts, this was mentioned in my previous post about Gruber and Galloway's 'Earth-System Perspective' but hopefully the video will elaborate on and clarify the issue. It is my intention to post as many relevant videos as possible throughout the course of the blog, although they are proving tricky to find!
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