Groundwater is polluted by:

Chemical Fertilizers

Automobile exhaust

Fossil Fuel Burining

All of the Above

All of the above.

Explanation:

Ground water is polluted by Chemical fertilizers, Automobile exhaust as well as Fossil fuel burning.

Chemical fertilizers are directly causin ground water pollution. The excess of Chemical fertilizers on the land results in leaching of these chemicals into the ground water during rains.

But the Automobile exhaust and Fossil fuel burning are indirectly causing ground water pollution.

This can best be explained by considering the effects of acid rain on ground water. Acid rain causes harmful elements and certain toxic substance to dissolve in it and leach into the soil reaching the ground water. The Ground water acidification is also a consequence of acid rain.

Acid rains results from the presence of oxides of nitrogen, carbons, sulphur etc. These air pollutants are added to the atmosphere by automobile exhausts and fossil fuel burning.

So, we can conclude that automobile exhaust and fossil fuel burning may not be a direct cause of ground water pollution but they are indirectly responsible for ground water pollution.