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Question

The chief sources of water pollution can be:
  1. both A and B
  2. point sources
  3. non-point sources
  4. none of above

A
point sources
B
none of above
C
non-point sources
D
both A and B
Solution
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There are various classifications of water pollution. The two chief sources of water pollution can be seen as point and non-point sources. Point refer to the pollutants that belong to a single source. Non-Point, on the other hand, means pollutants emitted from multiple sources.

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