Among all bioindicators, lichens have been identified as a useful plant to monitor the level of pollution in the environment. The purpose of this study is to observe the species diversity of lichens in different settings and use it as an indicator for air pollution. They can be used in two ways to monitor air pollution: 1) grouping the species of lichens present in a specific area 2) measuring the morphological changes or the accumulation of pollutants in the lichens. Ultimately, lichens are very significant to our everyday world as they provide a means to convert carbon dioxide in the atmosphere through photosynthess into oxygen, which humans need to survive. For this study, our specific aim is to compare the air pollution when lichens are present among different levels of urbanization. The first method will be applied to correlate the diversity of lichens to the air quality. It is imperative to pay close attention to the environment now more than ever, and so any step to detect and control a problem must be taken to find and implement a solution.
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