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Acid rain has been an ongoing issue in the world since developed countries began producing emissions on a large scale. Acid rain is defined as having an average pH of 4.2-4.4, while "clean" rain is defined by the EPA as having a pH of 5.6 (Figure 1). Locations that have a history of lower pH of precipitation are places that also have higher emissions-cities with high incidence of industry, factories, mines, cattle farms, etc. As much as 70% of emissions are caused by burning fossil fuels.

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Higher Education | Scholarship of Teaching and Learning

Acid Rain: A LevelUp Experience in Math 442



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