A) Urban sewage drains
B) industrial effluents
C) Agricultural fields
D) both and [b]
Correct Answer: C
Solution :
Non-point sources of pollution are often termed 'diffuse' pollution and refer to those inputs and impacts which occur over a wide area and are not easily attributed to a single source. They are often associated with particular land uses, as opposed to individual point source discharges. Non-point source water pollution affects a water body from sources such as polluted runoff from agricultural areas draining into a river, or wind-borne debris blowing out to sea. Urban sewage drains and industrial effluents are point pollution sources of river water.
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