The principle difference between point source and nonpoint source water pollution is a. whether the pollution is organic or inorganic b. the number of sources of pollution c. the amount of pollution d. whether it is from commercial or agricultural sources select the best answer from the choices provided a b c d

 b)  the number of sources of pollution

Explanation:

Pollution is the introduction of harmful or toxic substances in the environment of a substance.

Point source pollution is the pollution from a single identifiable source. Example of a point source pollution is pollutants from factories and sewage treatment plants.

Non point source pollution is from a number of sources and we may not identify all of the sources.Thus non point pollution is also termed as diffused pollution. Example of a non point source pollution is fertilizers and pesticides from agricultural lands.

.