To make amino acids, proteins, and DNA. When organisms die, their bodies decompose bringing nitrogen into the soil on land or into ocean water.
Nitrogen is a part of amino acids and urea. Urea is a by-product of protein digestion for a living organism. Amino acids are building blocks of proteins this result in obtaining all living things to use nitrogen to make amino acids, urea, and proteins. Everybody requires proteins for their survival. Therefore, proteins are essential for our growth and development of the body.
