Question

How do lichens indicate the level of air pollution
A-'Most lichens ghow well in polluted air
B-Lichens can't grow at all in polluted air
C Growth of lichens is not affected by air pollution
D- None of the above
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Answer 1

Answer:

B is answer and pls mark me as brainliest!

Answer 2

Answer:

B is the correct answer

If air is very badly polluted with sulphur dioxide there may be no lichens present, just green algae may be found.