what is nitrogen cycle
Answers
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.
Nitrogen Cycle : The complete series of cyclical events by which nitrogen from atmosphere enters into the compositions of organisms and from organisms it is released to the atmoshphere again tp maintain the equilibrium of atmospheric nitrogen is called NITROGEN CYCLE.
Steps : Nitrogen cycle cosnsists of various steps such as - Nitrogen fixation, Ammonification, Nitrification, Denitrification.
Significances :
1] Nitrogen cycle maintains the nitrogen equilibrium in atmosphere.
2] Nitrogen cycle maintains the balance between the gaseous nitrogen and soil nitrates.
3] Nitrogen is an essential component of protein. It is also required for synthesis of nucleic acids like DNA and RNA. So, nitrogen cycle is useful for maintaining the equilibrium of nitrogen.
