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01/11/2021 12:26 pm
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Which of the following is the use of lichens in case of pollution?
(1) They promote pollution
(2) They treat the polluted water
(3) Lichens are not related with pollution
(4) They act as bioindicators of pollution
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01/11/2021 12:28 pm
Correct answer: (4) They act as bioindicators of pollution