Question

2. Which one of the following is an indicator of pollution?

(a) Armillaria mellea
(b) Croton
(c) Cuscuta
(d) Lichen​

Answer 1

$\: \: \: \huge{\underline{\mathfrak\red{❥answer❣}}}$

$\: \huge\sf\pink{Lichen}$

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Answer 2

lichens are very sensitive to air pollution specially SO2 pollution

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