about soil pollution
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presence of unwanted and undesirable substances in soil is called soil pollution
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soil pollution occurs either by direct wastes or indirectly by air pollution.pesticide used in agricultural practices are major pollutants. several pesticides or thier residue are absorbed by the plants that affect the entire food chain excretory products of humans,livestock and untreated sewage sludge used as manure pollute soil. plastic wastes do not decay act as traps for moisture and putrid air which breed harmful bacteria. salination of soil also affect productivity and degrades quality of soil.
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