CBSE Class 7 Answered

The following can help in the prevention of soil pollution:

1. Avoid using plastic bags; instead use paper, cloth or jute bags.

2. Plastics, discarded glass and metal objects should be sent for recycling.

3. Use of excessive pesticides and chemical fertilisers in agriculture should be minimised.

4. Appropriate steps should be taken to reduce the emission of harmful gases such as sulphur dioxide and nitrogen oxide from factories which are responsible for acid rains.

5. Industrial wastes should be treated to make them harmless before dumping in the soil.