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Go to a nearby pond observe organisms living in the pond and biodegradable substances mixing in water. How they effect on those organisms? Write your observation.

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  • Biodegradable pollutants could have serious environmental consequences if large quantities are released in a small area. 
  • For example, dumping of biodegradable waste in to a small pond will deplete the •pond’s oxygen supply. 
  • Microorganisms in the ponds uses oxygen for degrading biological wastes. 
  • More amount of oxygen will be utilised by microorganisms for degradation. 
  • Left with no oxygen the aquatic organisms like fish die.
  • Thus biodegradable substances become pollutants.

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