lichens can be used as air pollution indicators. lichens grow in exposed areas such as rocks and tree bark. Rainwater contains the nutrients to keep them alive. air pollutants dissolved in rainwater can damage lichens and stops them from growing.This makes lichens indicators of air pollution.
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September 20, 2016 at 3:26 pm
And also different lichens are abel to live with different levels of sulfur dioxide and so you’ll find them living in different places.
September 20, 2016 at 8:33 pm
Ok thank you
October 16, 2016 at 10:09 pm
No problem!