Match the pollutants given in Column I with their effects given in Column II.

Column I Column II
(i) Phosphate fertilizer in water (a) BOD level water increases
(ii) Methane in air (b) Acid rain
(iii) Synthetic detergents in water  (c) Global warning
(iv) Nitrogen oxides in air (d) Eutrophication



 

Answers (1)

(i) \rightarrow (a, d); (ii) \rightarrow (c); (iii) \rightarrow (a); (iv) \rightarrow (b)

Explanation: Phosphates enhance the growth of algae in the water, which covers the surface of the water and reduces the concentration of oxygen in the water and thereby increasing the BOD level of water. This causes harm or may even prove fatal to animal life by depriving them of oxygen, and this subsequent loss of biodiversity is known as eutrophication.

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