Q. Bioindicators are
A. lichens tracing the presence of pollution
B. fossil lichens
C. a special type of litmus paper
D. None of the above
Answer: lichens tracing the presence of pollution
We will be happy to hear your thoughts
A. lichens tracing the presence of pollution
B. fossil lichens
C. a special type of litmus paper
D. None of the above
Answer: lichens tracing the presence of pollution