We would like to show you a description here but the site won’t allow us. Learn about the nitrogen cycle, a biogeochemical process that converts nitrogen gas into various forms for living things. See diagrams, drawings, and examples of nitrogen fixation, nitrification, assimilation, ammonification, and denitrification. Learn about the nitrogen cycle in nature with diagrams and examples. Find out how nitrogen is fixed, absorbed, decomposed and recycled by plants, animals and micro-organisms. Here are some important notes on Class 8 science chapter Nitrogen cycle and it's importance.