Mr. Wells told his students that the Water cycle DOES have a clear beginning and a clear end. Mrs. Meador disagrees with him and says the Water Cycle DOES NOT have a clear beginning and end. Who do you agree with and WHY?

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.