In ecosystems, nutrients

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     are often wasted at higher trophic levels
      are used up and must be replenished each year
      follow the same cycles as energy
      cycle repeatedly and are never used up
asked Jun 25, 2012 in Environmental Science by anonymous
    

1 Answer

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cycle repeatedly and are never used up
answered Jun 26, 2012 by Geodude ~Top Expert~ (9,680 points)



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