Lichens are destroyed when there is an increase in the level of
nitrous di-oxide
sulphur di-oxide
carbon di-oxide
Ozone
Answers
Answered by
0
Answer:
so2 ( sulphur dioxide)
Explanation:
liches are associations between algae and fungi . they are often regarded as polution indicators as they donot grow in areas where high amount of sulphur dioxide is present .
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