Nitrogen is an essential part of proteins.
they are nitrogen oxygen argon and carbon dioxide
All living things use nitrogen to build amino acids, nucleic acids, and ATP.
Nitrogen is used widely in fertilizers are nitrates and nitrites. It is also used in the filed of medicine. Liquid nitrogen has man uses in research field.
1. Livng 2. Living 3. Living
Nitrogen is used in the nitrogen cycle to help plants grow.
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The Amur is used for transport, fishing, living on and irrigation, it feeds and gives a living to millions of people.
http://en.wikipedia.org/wiki/Nitrogen#Applications
The roots extract nitrogen from the soil.
Everyone uses nitrogen. It is essential for life.
The Nitrogen that is used to make Ammonia (NH4) is extracted from the air.
Bacteria