Question

what are the causes of water pollution discuss how you can contribute in reducing water pollution

Answer 1

Causes of water pollution:
-sewage waste 
-burning of fossil fuels
-chemical fertilizers and pesticides
-global warming
-mining (extracting minerals from rocks)

Contributions to reducing water pollution
-dispose of waste properly
-conserve water as much as possible
-implement rules and regulations about illegal dumping in bodies of water
-not throwing litter or dangerous chemicals into water

Answer 2

causes of water pollution are, excessive use of fertilisers and pesticides.sewage. industrial effluents. thermal pollutant etc .
reducing water pollution, lesser use of fertilisers,
washing of clothes should be avoided near water bodies,
dead animals and decaying plants shouldn't be thrown into water bodies.