Saturday 20 August 2011

Bio 15 : Water pollution

1. Water pollution is caused by dosmetic wastes, industrial wastes, and agriculture wastes that are discharged directly into rivers. Soil erosion can also lead to water pollution.

2. Sources of water pollution:
a.Discharge of untreated sewage and domestic waste into rivers.
b.Discharge of industrial waste.
c.Discharge of agricultural wastes.
d.Oil spillage.

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