Problem: In the "Agriculture: The Habitable Planet - A Systems Approach to Environmental Science" video, we learn about the Green Revolution and the importance of adding nitrogen (N) to crops. We also learn about downsides to nitrogen fertilizers when excess nitrogen enters the atmosphere and water systems instead of being used by the crops. On average, how much of the nitrogen that farmers apply typically stays on the fields? It depends on the type of nitrogen, where in the world the field is located, and the crop. 20 percent 100 percent 50 percent. Need Assignment Help?