Moderate

Pollution of SO2 destroy:

Correct answer: B. Lichen

  • A. Fungi
  • B. Lichen
  • C. Algae
  • D. Fishes

Explanation

Lichens are highly sensitive to sulphur dioxide because they absorb water and dissolved pollutants directly over their surface, with no protective roots or cuticle. They therefore disappear from heavily SO2-polluted areas before many higher plants.

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