Nitrogen Cycle

 Nitrogen is an essential element to living things such as plants and animals.  It is a key nutrient required by the flora.  But it is scarce in the topsoil of the tropical rainforest. If it is so scarce than how does it get their nitrogen-based nutrients?   Decomposition's of organic matter like animals and dead animals produce ammonia which then mixes with the soil to produce nitrates and nitrites.  These compounds are then taken in as nutrients by the roots of the flora.  The remaining ammonia is released into the atmosphere.  During the next rainfall, water containing nitrogen compounds pours down.  This matter cycle flows in a one way direction.  This is different than an energy flow chart because in an energy flow chart, arrows go off in every direction. 


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