What is soil pollution? Why should we avoid soil pollution?

Soil pollution is defined as the change in physical, chemical and biological conditions of the soil through man's intervention resulting in degradation in quality and productivity of the soil.

We should avoid soil pollution because of the following reasons-

1. The pollutants enter the food chain at the plant level and get magnified as we move up the food chain.
2. The pollutants remain in the soil for relatively longer periods.