Which of the following statements provides the best explanation of what happens to chemicals that pollute aquifers? a. anaerobic bacteria quickly break down the chemical pollutants once the source of the pollution is removed. b. water that comes into the aquifer quickly dilutes the chemicals once the source of the pollution is removed. c. the chemicals quickly seep from the water into the surrounding bedrock once the source of the pollution is removed. d. chemical pollutants remain in the aquifer for a long time because the lack of oxygen prevents bacteria from breaking them down.