Unit 6: Air Section 6:Acid Precipitation How Acid Precipitation Affects Ecosystems International Conflict and Cooperation

February 25, 2016 Sanders Homework Questions 1. What human activities contribute to acid precipitation? 2. Why in international cooperation necessary to reduce acid precipitation?

February 25, 2016 Sanders Vocabulary Acid Precipitation –Highly acidic precipitation Acid Shock –Sudden influx of acidic water caused by melting acidic snows that rush into lakes and streams, killing large numbers of fish and amphibians and affecting the offspring of others

February 25, 2016 Sanders

February 25, 2016 Sanders pH Scale

February 25, 2016 Sanders How Acid Rain Affects Ecosystems Animals designed to live in pH range. Acid rain changes pH of lake or river. Animals and plants die. –Aquatic plants –Fish –Animals that depend on these

February 25, 2016 Sanders Acid Precipitation Forests, mostly evergreens are susceptible to arid precipitation. If the water in their roots is too acidic, they die.

February 25, 2016 Sanders

February 25, 2016 Sanders Effects Obelisk is 5000 years old from Egypt. This obelisk is in Central Park, New York City. –Notice the weathering.

February 25, 2016 Sanders International Conflict Global air circulation is not limited to national boundaries Air pollution in New England and Canada comes from Mid-western United States.

February 25, 2016 Sanders Helsinki Agreement Signed Cut sulfur-oxide 30% over 10 years. –Signed by 18 nations. 1988, 27 nations signed in United Nations Sofia Protocol which required the reduction of nitrous oxide.