Explain how soil pollution and soil erosion could be prevented.

Answer:

Soil pollution refers to the contamination of soil with anomalous concentrations of toxic substances.

Example: Soil contamination that includes high levels of benzene raises the risk of leukaemia.

Soil pollution can be controlled by the following measures:

  • By reducing the use of plastics, we can reduce soil pollution.
  • By controlling the use of chemical fertilisers and pesticides, we can control soil pollution.
  • Treating industrial waste before releasing.

Soil erosion is the natural process in which the topsoil of a field is carried away by physical sources such as wind and water. Soil erosion can be controlled by the following measures:

  • Plant trees on barren lands to limit erosion of soil.
  • Add mulch and rocks to prevent the plants and grass underneath to prevent soil erosion.
  • Mulch matting can be used to reduce erosion on the slopes.
  • Put a series of fibre logs to prevent any water or soil from washing away.
  • A wall at the base of the slope can help in preventing the soil from eroding.
  • Every household should have a proper drainage system so that water flows down into proper water collecting systems.

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