Since 1980 in the United States, the greatest reduction in gases that contribute to acid deposition has resulted from:
decreased reliance upon fossil fuels. a dramatic decrease in the amount of emissions from vehicles. the use of scrubbers on smokestacks. taller smokestacks on power plants.
Since 1980 in the United States, the greatest reduction in gases that contribute to acid deposition has resulted from the use of scrubbers on smokestacks. Scrubbers are technologies installed in power plants and industrial facilities that remove sulfur dioxide (SO2) and other pollutants from exhaust gases before they are released into the atmosphere. This has been a significant factor in reducing acid rain and its associated environmental impacts.