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Q.

Air pollutants are harmful to living things. Which of the following is/are their harmful effect(s)?

(i)  They form acid rain.

(ii) They cause breathing problems in humans.

(iii) They interfere with photosynthesis in plants.

(iv) They result in the depletion of ozone layer.

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a

(i) and (ii) only

b

(i), (ii), (iii) and (iv)

c

(i), (ii) and (iii) only

d

(i) only

answer is D.

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