Answer:
200 percentage is the exact concentration
Point source pollution is a single, identifiable location of a pollution like a drainage or a pipe. On the other hand non-point source pollution refer to wastes that are disposed at a wide area and cannot be easily determined where the sources are. The answer for this is false. It is the non-point source pollution that is difficult to track and to control.
Plants are in the ground with soil
Answer:
Is there more to the question? I'm not sure what this would be.