Question

describe all the steps of nitrogen cycle in nature

Answer 1

*nitrogen is found abundantly in the atmosphere.
*but the plants cannot take nitrogen directly.
*so there are some nitrogen fixing bacteria in the roots of these plants which convert atmospheric nitrogen into soluble nitrogen.
*Later the plants are consumed by animals.
*the process by which nitrates and nitrites are converted into ammonia is called ammonification.
*later the nitrites are converted to nitrates by the process of nitrification.
*the nitrites are again converted into atmospheric nitrogen by some denitrifying bacteria.
*in this way,the level of nitrogen in the atmosphere remains constant.