Why is it reasonable to hypothesize that lichens might predict air quality?

Question

Quizplus · Accepted Answer

Lichens are known to absorb minerals and nutrients from their surrounding environment, including air pollution. Additionally, their flat morphology provides a high surface area-to-volume ratio, allowing them to absorb pollutants more efficiently. Therefore, both A and B are correct reasons why it is reasonable to hypothesize that lichens might predict air quality.

Why Is It Reasonable to Hypothesize That Lichens Might Predict