Question

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

Answer 1

The correct option is B.
The major difference between point source and non point source of water pollution is the number of sources of pollution. Point source pollution refers to type of pollution that discharged from one identifiable source, for instance from pipe or air while non point pollution refers to pollution from different sources. 

Answer 2

The principal difference between point source and nonpoint source water is generally B. The number of sources of pollution.