Question

How do lichens help scientist in assessing the effects air pollution tell me guys ​

Answer 1

Explanation:

One of the most common indicator species used to measure air pollution are lichens. ... Scientists have found that green and bushy lichen survive only in clean air, so the presence of many green and bushy lichens in a given environment indicates that the air is clean.

Lichens also absorb sulphur dioxide dissolved in water. Lichens are widely used as environmental indicators or bio-indicators. If air is very badly polluted with sulphur dioxide there may be no lichens present, just green algae may be found. If the air is clean, shrubby, hairy and leafy lichens become abundant.

Answer 2

Answer:

the lichens never grow at a polluted places that's why they are good pollution indicators