1.

How can the soil polluted by acid rain be made fertile again ?

Answer» (i) Sulphuric acid is present in the acid rain and in materials coming out of mines.
(ii) Erosion of bridges , metal statues , occurs due to acid rain .
(iii) Sulphuric acid is the source of energy for some species of bacteria like Acidophillium spp. and Acidobacillus ferroxidens.
(iv) Hence , these bacteria can control the soil pollution occurring due to acid rain , and the soil can be made fertile again.


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