1.

Define Eutrophication. Describe the Natural Eutrophication.

Answer»

The process of nutrient enrichment of water and consequent loss of species diversity is referred to as Eutrophication. 

Natural Eutrophication: 

  • Streams draining into the lake increase nutrients like nitrogen and phosphorus. 
  • Increase in nutrient encourages growth of aquatic organisms.
  • Over centuries, as silt and organic debris pileup the lake grows shallower and warmer. 
  • Warm-water organisms dominate over that thrive in a cold environment. 
  • Marsh plants take root in the shallows and begin to fill in the original lake basin.
  • Eventually the lake gives way to large masses of floating plants (bog), finally converting into land


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