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Lichen are a good pollution indicator because they get their water and minerals from rainwater and the atmosphere. This makest lichen extremely sensitive to the atmosphere. As a result very few lichen grow in or near large cities with heavy pollution.
lichen
Lichens are air pollution indicators.
The amount of pollution.
Some organisms die when there is high or higher levels of pollution. This means that they are pollution sensitive. However, if they are pollution tolerant, it means that they can survive high levels of pollution without dying.
because they are sensitive to pollution and that how you can tell how polluted a river is
Lichens are bio -indicators as the clear respond to changes in their environment . Areas that suffer from extreme air pollution will have no lichen as it cannot grow under those conditions.
It is an indicator of poor air quality from air pollution. This pollution is most often ozone or particulates. Typically it indicates that the air is unhealthy for children, the elderly, and sensitive groups.
The most common type of lichen are single-celled green algae of the genus Trebouxia.
Comparative: more sensitive Superlative: most sensitive
Wolf lichen, British soldier lichen, or Christmas lichen. These are a few of many.
because its a doo doo