• pH of Aqueous Solutions
• Atmospheric Sulfur Chemistry and Production of Sulfuric Acid
• Sources of Atmospheric Sulfur Compounds
• Other Sources of Acidic Compounds in the Atmosphere
• Deposition Processes
• The pH of Rain
• Regional Transport of Acids and the Distribution of Rain pH in the U.S.
• Health Effects from Breathing SOx
• Acidification of Freshwater Lakes
• Forest Decline Due to Acidification and Acid Deposition
• Abatement Measures

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