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Question

Pollution from animal excreta and organic waste from the kitchen can be most profitably minimised by


  1. Using them for producing biogas 

  2. Storing them in underground storage tanks 

  3. Vermiculture

  4. Using them directly as biofertilisers


Solution

The correct option is A

Using them for producing biogas 


Biodegradable wastes like animal excreta and organic waste from the kitchen can be used in biogas plants to generate biogas and manure. Biogas is a cheap source of fuel and the manure can be used as a cheap fertiliser.

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