A community is concerned that its river has become polluted. Analysis of water samples shows small amounts of over 20 different chemicals.
Which of the following is the most likely cause for the increase in
pollution?
A
The increase is due to agricultural point source pollution.
B
The increase is due to industrial point source pollution.
C
The increase is due to residential non-point source pollution.
D
It is impossible to determine.
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B. The increase is due to industrial point source pollution.

Explanation:

Pollution is the release of harmful substances into land, air or water. The harmful or toxic substances are called POLLUTANTS. According to this question, a community discovers via analysis that its river is now polluted with small amounts of over 20 different chemicals.

This chemicals is a pollutant that can likely emanate from industrial companies and industries that produces these harmful chemicals as waste. Hence, the increase is due to industrial point source pollution.