define nitrogen cycle
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The nitrogen cycle is the biochemical cycle by which nitrogen converted into multiple froms as it circulates among atmosphere,terrestrial and marine ecosystem
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nitrogen is a major component of air. Air consists of nearly 78 percent of nitrogen. plant and animals cannot use it in its free form available in the atmosphere.plant can use nitrogen in the form of nitrates to make protein and animals get their nitrogen from plant proteins when they eat plant and plant products.
The nitrogen cycle is the biochemical cycle by which nitrogen converted into multiple froms as it circulates among atmosphere,terrestrial and marine ecosystem
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