Answer: c. smoke stacks
Which of the following is not a source of groundwater pollution?a.landfillsb.septic tanksc.smoke stacksd.fertilizer

A leachate is any liquid that in the course of passing through matter extracts soluble or suspended solids or any other component of the material through which it has passed.. Leachate is a widely used term in the environmental sciences where it has the specific meaning of a liquid that has dissolved or entrained environmentally harmful substances that may then enter the environment.

Acid rain is a rain or any other form of precipitation that is unusually acidic meaning that it has elevated levels of hydrogen ions (low pH).It can have harmful effects on plants aquatic animals and infrastructure. Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide which react with the water molecules in the atmosphere to produce acids.

Biogas is the mixture of gases produced by the breakdown of organic matter in the absence of oxygen (anaerobically) primarily consisting of methane and carbon dioxide. Biogas c...

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