what is nitrogen cycle
Answers
nitrogen forms 78% i.e the maximum portion of the atmosphere. it is necessary for the maintenance of the cycle of nature. the circulation and recycling of nitrogen gas into the form of different compounds through various biotic and abiotic processes in nature is called nitrogen cycle.
Nitrogen cycle, circulation of nitrogen in various forms through nature. Nitrogen, a component of proteins and nucleic acids, is essential to life on Earth. Although 78 percent by volume of the atmosphere is nitrogen gas, this abundant reservoir exists in a form unusable by most organisms. Through a series of microbial transformations, however, nitrogen is made available to plants, which in turn ultimately sustain all animal life. The steps, which are not altogether sequential, fall into the following classifications: nitrogen fixation, nitrogen assimilation, ammonification, nitrification, and denitrification.