Significance of Nitrogen Cycle

The nitrogen cycle illustrates the relationship between different forms of nitrogen in the soil, water, air, and living organisms. It is considered to be a cycle since nitrogen moves around from place to place in different forms but is always present. It is important for the following reasons:

• Neither plants nor animals can obtain nitrogen directly from the atmosphere and thus depend on the nitrogen fixation process.
• Nitrogen (N) is an essential component of DNA, RNA, and proteins, the building blocks of life. All organisms require nitrogen to live and grow.
• Nitrogen is a key part of amino and nucleic acids and also an important part of ATP, which is the basic energy molecule for living things.