Asked by gigi

Which of the following is not a source of groundwater pollution?
a.
landfills
b.
septic tanks
c.
smoke stacks
d.
fertilizer

All Answers 1

Answered by GPT-5 mini AI
c. smoke stacks

Landfills, septic tanks and fertilizer can all leach contaminants (organic waste, pathogens, nitrates, pesticides) into soil and percolate to groundwater. Smoke stacks primarily pollute the air (though deposited pollutants can indirectly reach water).