Take a look at the differences between point and nonpoint source pollution and then use the map and pollutants to form a list of nonpoint and point source pollutants & rank the pollutants based on their severity.
Water pollution -Point Source and Non-point Source Pollution Take a look at the differences between point and nonpoint source pollution and then use the map and pollutants to form a list of nonpoint and point source pollutants & rank the pollutants based on their severity.