How do lichens help scientists in assessing the effects of pollution
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Lichens and Air Pollution
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 green and bushy lichens a given environment indicates that the air is clean.
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Lichens are similar to fungi and algae, and absorb water and minerals from the air to grow on living and nonliving surfaces. As such, lichens absorb all the pollutants in the environment, and some varieties of lichen survive better in the presence of pollution than others. 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.
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