A pond is located beside an open mine. Mercury from the mine contaminates the river water. This is an example of

single pollution
multiple pollution
point source pollution
non-point source pollution

would this one be c or b. im having trouble with this one.

It doesn't appear to be a multiple pollution.

so it would be c

Yes. It's c.

To determine the correct answer, let's break down the options:

A) Single pollution: This refers to the contamination of a water source from a single identifiable source. In this case, we have a mine contaminating a river, so it doesn't fit the definition of single pollution.

B) Multiple pollution: This refers to the contamination of a water source from multiple identifiable sources. In this case, we only have one source, which is the mine, so it doesn't fit the definition of multiple pollution.

C) Point source pollution: This refers to the contamination of a water source from a single, identifiable discharge point. In this case, the mercury from the mine is being directly discharged into the river, making it a point source pollution.

D) Non-point source pollution: This refers to pollution that comes from diffuse sources and is difficult to trace back to a specific point of origin. Examples include runoff from agricultural fields or urban areas. Since the mercury contamination in this scenario is coming from a specific mine, it doesn't fit the definition of non-point source pollution.

Based on the options provided, the most appropriate answer would be C) point source pollution.