What major greenhouse gas is a product of the combustion of fossil fuels

If you want to create an electrical current, which situation would produce a solution capable of this

Identify and describe the three ways that mutations affect organisms.

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.