Animals obtain nitrogen by eating plants which have absorbed nitrogen from the soil.
they get it from their food that they eat.
Various animal wastes.
Various animal wastes
Plants take in nitrogen from their roots then the consumers eat the plants.
Either ammonium nitrite or ammonium dichromate can he heated to obtain nitrogen gas.
The nitrogen found in the animal returns to the soil
No.
When an Animal Dies, and Decomposes Nitrogen is Released, where Bacteria and Plants begin there work, you may want to research the Nitrogen Cyclean animal returns nitrogen to the environment when it urinates or decompeses or dies or decays
mostly from food.
D
Nitrogen
from amino acids
eating the plants