Question

9. explain how soil pollution and soil erosion could be prevented ?​

Answer 1

Answer: Answer: Prevention of soil pollution can be done by (i) use of manures instead of synthetic fertilisers. ... (iv) industrial waste should be treated before release in soil. Prevention of soil erosion can be done by (i) afforestation that is large scale planting in place of cut down forests.

Answer 2

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:

1)By reducing the use of plastics, we can reduce soil pollution.

2)By controlling the use of chemical fertilisers and pesticides, we can control soil pollution.

3)Treating industrial waste before releasing.

4)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.

1)Add mulch and rocks to prevent the plants and grass underneath to prevent soil erosion.

2)Mulch matting can be used to reduce erosion on the slopes.

3)Put a series of fibre logs to prevent any water or soil from washing away.

4)A wall at the base of the slope can help in preventing the soil from eroding.

5)Every household should have a proper drainage system so that water flows down into proper water collecting systems.