Which one among the following is used as environment indicators or bio-indicators to check the level of pollution?

Which one among the following is used as environment indicators or bio

1.	Which one among the following is used as environment indicators or bio-indicators to check the level of pollution?
A.	Lichens
B.	Mosses
C.	Ferns
D.	All the above
E.	None of these
Answer» B. Mosses

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Which one among the following is used as environment indicators or bio-indicators to check the level of pollution?

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