Magazine Articles | Weather n Climate | VOL. 11, ISSUE 69, November-December 2011 |

The Nitrogen Cycle

Nitrogen is an essential element which every organism needs for adequate growth and function. Nitrogen is found in all amino acids, incorporated into proteins and present as bases that make up nucleic acids such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). In plants, much of the nitrogen is used in chlorophyll molecules which are essential for photosynthesis and further growth. Although 78 per cent of the atmosphere comprises of nitrogen gas, it is relatively inert. It cannot, therefore, be...

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