Question

which of these is an example of point-source pollution? a. runoff from croplands b. noise pollution from city streets c. runoff from a suburban development d. noise pollution from a jet engine

Explanation:

Point - source pollution comes from a single, identifiable source.

• Option A: Runoff from croplands is non - point source as it comes from a large, diffuse area (the croplands).
• Option B: Noise from city streets is non - point source as it comes from many sources (various vehicles, activities) in the street area.
• Option C: Runoff from a suburban development is non - point source as it comes from a large, diffuse area (the whole suburban development).
• Option D: Noise from a jet engine comes from a single, identifiable source (the jet engine), so it is point - source pollution.

Answer:

D. Noise pollution from a jet engine