Answers

2015-01-31T15:54:20+05:30
 Soil Pollution: Removal of desirabledesirable components from the soil and addition of components from the soil and addition of undesirable substances is called soil pollution.
  Or,
Removal of useful components from the soil and addition of other substances, which adversely affect Removal of useful components from the soil and addition of other substances, which adversely affect, which adversely affect the fertility of the soil and kill the diversity of organisms that live in it, is called soil pollution

 It is Caused 
- Fertilizers : change the pH of soil, increase salinity etc.- Insecticides : kill the micro--flora and micro-fauna of top soil.

- Heavy machinery :  kills the helpful organisms like earthworm.

- Garbage dumping : permanently changes the contents of soil.Garbage dumping : permanently changes the contents of soil.
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2015-01-31T16:05:49+05:30
undesirable wastes present in the soil which harms locality is called soil pollution . it is caused by the industrial wastes , urban wastes , fertilizers , pesticides , farm wastes , biological agents mixed up with the soil and causes soil pollution .
it is very harmful for living organisms . polluted soil damages crops and decreases
agricultural productions  .
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