1.

Give the causes and Effects of Cultural or Accelerated Eutrophication.

Answer»

Causes: 

  • Sewage and agricultural and industrial wastes. 
  • Prime contaminants are nitrates and phosphates. 

Effects: 

  • Unsightly scum and unpleasant odors. 
  • Robbing the dissolved oxygen form water. 
  • Pollutant inflow kills the fish. 
  • Decomposition of dead fish causes further depletion of DO.  
  • Finally a lake can literally choke to death.


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