sources of nitrogen to the soil
{"Image DocumentName": "Sources of Nitrogen to the Soil", "Image ImageDescription": "Natural ecosystems receive their soil nitrogen through biological fixation and atmospheric deposition. Agricultural ecosystems receive additional nitrogen through fertilizer addition.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}