User:Usha v gowda/sandbox

Soil Soil contamination, soil pollution, or land [[pollutio

n]] as a part of land degradation is caused by the presence of xenobiotic (human-made) chemicals or other alteration in the natural soil environment. It is typically caused by industrial activity, agricultural chemicals. Soil pollution is defined as the presence of toxic chemicals (pollutants or contaminants which occur naturally in soil, even when their levels are not high enough to pose a risk, soil pollution is still said to occur if the levels of the contaminants in soil exceed the levels that  should naturally be present.       soil pollution causes     All soils, whether polluted or unpolluted, contain a variety of compounds (contaminants) which are naturally present.