Question

What is special about nitrogen , and what is its main function in the atmosphere

Answer 1

Nitrogen makes about 78% of the air we breathe. Nitrogen is extremely important in living things. It forms the building blocks of proteins. We need proteins because they make up our skin and hair. Proteins also help us digest food. We get our nitrogen from plants, and plants get it from bacteria in the soil. Our atmosphere provides life with the nitrogen it needs.