Section 3:  Acid Precipitation

Chapter 12 Section 3 Presentation
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Key Terms:

• acid precipitation
• pH
• acid shock

Main Ideas:

• Acid precipitation is precipitation such as rain, sleet, or snow that contains a high concentration of acids.
• Acid shock occurs when a sudden influx of acidic water enters a lake or stream and causes a rapid change in pH that harms aquatic life.
• Pollutants released in one geographical area may fall to the ground hundreds of miles away as acid precipitation--sometimes in another country.