Pathway of Movement

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  First, my nitrogen must be fixed so it can be less mobile and more useful. This is done by combining my nitrogen with hydrogen which makes ammonia. Next, bacteria that forms nitrites combines the ammonia with oxygen to form nitrites. A different group will then transform my nitrites to nitrates. Plants will then be able to absorb the nitrates. But then they are reduced to ammonium which will make amino acids. (These amino acids will act as building blocks for peptides and proteins.)
 To reenter the environment, my nitrogen usually travels through dead organisms. When the bodies decay,, fungi and bacteria grow on them and release ammonia and ammonium. However, nitrogeneous compounds can also be released through leaves, flowers, fruits,skin, excrement, or urine. When these products decompose, the soil is replenished.
   To reenter the atmosphere,a process called denitrification takes place. Bacteria that lives deep in soil, swamps, marshes etc. use nitrates instead of oxygen for respiration thus reducing them to nitrogen gas again.
     In conclusion, I can be summed up in four steps:
          1.Nitrogen Fixation
            2.Decay
          3.Nitrification
          4.Denitification