A location with luxuriant growth of lichens o | vedclass

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(D) : Lichens are very sensitive to $SO_2$ pollution. They are completely destroyed at places where there is $SO_2$ pollution in the atmosphere. There

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location is not polluted.

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(D) : Lichens are very sensitive to $SO_2$ pollution. They are completely destroyed at places where there is $SO_2$ pollution in the atmosphere. Therefore,they act as very good indicators of $SO_2$ pollution. $A$ luxuriant growth of lichens signifies that the air quality is good and the area is free from $SO_2$ contamination.

$A$ location with luxuriant growth of lichens on the trees indicates that the

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