Correct option is C
Epiphytic lichens are highly sensitive to
air pollution, especially
sulphur dioxide (SO₂). A decline or absence of lichens in an area is a strong indicator of air pollution levels.
Epiphytic lichens are highly sensitive to
air pollution, especially
sulphur dioxide (SO₂). A decline or absence of lichens in an area is a strong indicator of air pollution levels.
Suggested Test Series
Suggested Test Series