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pollution

The United Nations defines pollution as the presence of substances or heat in the environment that produces undesirable effects:
  • These substances or heat can be in the air, water, or land
  • The nature, location, or quantity of these substances or heat can produce undesirable environmental effects
  • Pollution can also include activities that generate pollutants 
Some examples of pollution include:
  • Air pollution
  • Ground-level pollution
  • Indoor air pollution
  • Marine pollution
  • Noise pollution
  • Nuclear waste pollution
  • Photochemical air pollution
  • Physical pollution
  • Secondary air pollution
  • Thermal pollution 
In 2022, 175 nations agreed to develop a legally binding agreement on plastic pollution by 2024. The goal is to reduce greenhouse gas emissions from plastic production, use, and disposal.
Delhi air turns lethal as winter smog tightens gripNews

Delhi air turns lethal as winter smog tightens grip

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