• Pollutants are substances that pollute the environment, especially gases from vehicles and poisonous chemicals produced as waste by industrial processes.
  • Non-degradable pollutants move from one trophic level to another in an ecosystem.
  • Non-degradable pollutants mean those which cannot be decomposed by living organisms.
  • Example – Chlorinated Hydrocarbons (CHC), Diclofenac.
  • Chlorinated Hydrocarbons or Organochloride or CHC are hydrocarbons whose some or most hydrogen atoms have been replaced by chlorine atoms. E.g. DDT, endosulfan etc.).
  • A variety of simple chlorinated hydrocarbons including dichloromethane, chloroform, and carbon tetrachloride.


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