Nitrogen cycle steps
Step 1:
Nitrogen Fixation - conversion of atmospheric nitrogen into ammonia.
Step 2:
Nitrification - when ammonia is converted into nitrite.
Step 3:
Assimilation - nonorganic nitrogen is taken over by the roots of plants which becomes part of the food chain.
step 4:
Ammonification - organic nitrogen decomposes bacteria and fungus to return nitrogen to the soil.
step 5:
Demtrificition - anaerobic bacteria is returned to the atmosphere by nitrates.