Which of the following is an example of a nonpoint source of freshwater pollution

A. Pesticide runoff from farm fields
B. Leaking toxic waste landfill
C. Sewage treatment plant
D. Factory waste piped into a stream*

A. Pesticide runoff from farm fields

The correct answer is A. Pesticide runoff from farm fields.

To determine the correct answer, you need to understand the concept of nonpoint source pollution. Nonpoint source pollution refers to pollution that is diffuse and does not originate from a single, identifiable source. Instead, it results from various activities and processes across a large area.

In this case, all the options mentioned are potential sources of freshwater pollution, but we need to identify the nonpoint source of pollution.

Option A, pesticide runoff from farm fields, is an example of nonpoint source pollution. When farmers use pesticides on their crops, excess pesticides can be washed away by rainfall or irrigation and enter nearby water bodies. Since this pollution comes from multiple farms across a large area, it is considered nonpoint source pollution.

Option B, leaking toxic waste landfill, option C, sewage treatment plant, and option D, factory waste piped into a stream, are all examples of point source pollution. Point source pollution refers to pollution that originates from a specific and identifiable source, such as a single facility or site.

Therefore, by understanding the difference between nonpoint source and point source pollution, we can identify A. Pesticide runoff from farm fields as an example of nonpoint source freshwater pollution.

My answer is D

I disagree. The pipe entering the stream seems like a point source to me. There is one choice which is much harder to pin down to a specific location.