Likens and Bormann’s conclusions were startling because they showed that even remote areas, far from industrial centers, were deeply affected by human activity and pollution. It seemed that sulfur and other chemicals released by power plants in the Ohio Valley were drifting over the entire Northeast before falling to the ground as acid rain. These findings were consonant with similar results in southern Sweden and in Norway, where acid rain was likewise observed far from industrial settings. (In this case, it seemed the pollution was coming from England and Germany.) Acid rain due to sources
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