nitogen fixation and nitrogen cycle

1.	nitogen fixation and nitrogen cycle
Answer» Hi The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms.The features of the nitrogen cycle are-(i)Nitrogen fixation-Atmospheric nitrogen must be processed, to be used by plants.(ii)Assimilation-Plants can absorb nitrate or ammonia from the soil via their root hairs. If nitrate is absorbed, it is first reduced to nitrite and then ammonia.(iii)Ammonification-Bacteria, or fungi in some cases, convert the organic nitrogen into ammonium, a process called ammonification.(iv)Nitrification-Conversion of ammonia to nitrate is performed primarily by soil-living bacteria and other nitrifying bacteria.(v)Denitrification- Denitrification is the reduction of nitrates back into the largely inert nitrogen gas, completing the nitrogen cycle which is performed by\xa0Clostridium\xa0in anaerobic conditions.

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