Which of the following are most suitable indicators of SO2 pollution in the environment?

Which of the following are most suitable indicators of SO2 pollution in the environment?

Options

(a) Conifers
(b) Algae
(c) Fungi
(d) Lichens

Correct Answer:

Lichens

Explanation:

Lichens cannot grow in the place where sulphur dioxide, pollutant is available in the environment.

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