Lichens indicate SO2 pollution because they
A. show association between algae and fungi.
B. grow faster than others.
C. are sensitive to so2.
D. flourish in so2 rich environment.
Answer:A
Lichens indicate SO2 pollution because they
A. show association between algae and fungi. B. grow faster than others. C. are sensitive to so2. D. flourish in so2 rich environment.