4d - Human influcenes on the environment - Water Pollution

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  • Created by: NCB
  • Created on: 20-01-13 20:23

Water Pollution

There is an increase in the amount of pollution due to the increasing human popluation. Some of this pollution is cause by;

  • more fossil fuels being burnt for heat and power
  • more food being grown
  • land being taken over for industry and housing

The above have led to an increase of pollution in water;

  • Sulfur Dioxide, in the air, can dissolve in water and forms an acidic solution
  • Pesticides used by farmers to kill weeds and/or insects may be washed or blown into streams and/or rivers
  • Nitrate fertilisers are very soluble in water and therefore cannot be easily removed from the water. They are easily washed into the rives and reservoirs by the rain
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