PTE Reading MC Multiple Answers: A long-term study pertaining to acidic rainfall was carried out by the University of Il…

A long-term study pertaining to acidic rainfall was carried out by the University of Illinois researchers. According to the study emissions regulations certainly appear to have a considerable impact on our environment. Various samples of rainfall were collected from over 250 stations across the States on a weekly basis by The National Atmospheric Deposition Program. The vital purpose behind collecting the samples was to analyze the pollutants these samples contained. Followed by the analysis, a full report was released by the department which encapsulates details of the frequency of acid rain and the concentration over a period of 25 years between 1984 to 2009. One of the researchers named Chris Lehmann opined that this was one of the longest-term and vital precipitation study programs. He also added that regulations on emissions have been observed to have a direct and positive impact on pollution control in rainfall which will have a significant impact on pollution control in the long run. He further explained that rainfall chemistry does have a direct correlation with air pollution.