reduce pollution 17.05   Reduce pollution.
  cause pollution 5.73   Most air pollution is caused by cars.
  cut pollution 3.75   But current standards would cut their pollution by half.
  prevent pollution 2.90   Care will be required to prevent pollution of the burn.
  control pollution 2.30   The water company is failing to control pollution.
  curb pollution 2.17   The city is trying new measures to curb pollution.
  clean_up pollution 1.78   They want the pollution cleaned up.
  fight pollution 1.78   Besides fighting pollution, trees add value to businesses.
  air pollution 1.38   For instance, asthma is linked to air pollution.
  combat pollution 1.32   The so-called buffers combat water pollution.
  increase pollution 1.32   Deregulation also might increase air pollution.
  limit pollution 1.32   Could it help to limit environmental pollution?
  create pollution 1.25   The law is triggered only when plants create more pollution.
  monitor pollution 1.18   It is possible to monitor pollution from incinerator chimneys.
  produce pollution 1.18   Not only is it quieter, but it produces less pollution.
  emit pollution 0.86   China is highly dependent on coal for generating electricity, which emits extensive pollution.
  blame pollution 0.72   They blamed pollution.
  stop pollution 0.72   Find a solution to stop pollution!
  generate pollution 0.66   The manufacturing process generates pollution, as does incineration of used bags.
  tackle pollution 0.59   Governments must tackle pollution now.
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