How does nitrogen return from the biotic components of an ecosystem back to the abiotic?

Question

How does nitrogen return from the biotic components of an ecosystem back to the abiotic?

Answer 1

Oh man, there is a whole nitrogen cycle in which nitrogen is broken down by different bacteria and absorbed into soil where it is then either reabsorbed into roots or into the air.  The soil and air are abiotic while the roots and bacteria are biotic.  It's a rather complicate cycle and you should probably read a text in biology to fully understand the cycle.

Answer 2

THe return of Nitogen from biotic to abiotic and again to biotic is known as Nitrogen Cycle....in this process some bacteria play a vital role they are known as Nitrosomonas & Nitro bacters bacterias.

Nitrosomonas bacteria are found throughout almost every ecosystem, both terrestrial and aquatic. They are largely lithotrophic (found in soil) and aerobic.  Nitrosomonas bacterias takes ammonia (NH3)  from the excrete of animals or the decaying animals (abiotic)  or the soil and convert it to Nitrite(No2)...

Nitrobacter - feed on the nitrite produced by nitrosomonas, so it's not unusual to find the two together.  The nitrite consumed by nitrobacter is turned into nitrate (NH3).

and this nitrate is consumed by plants and from there to animals again. (thus the Nitogen Cycle goes on)

Answer 3

by denitrfication process prrform by denitryfying bacteria