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III. Acid Deposition.

Published byDagny Ødegård Modified over 5 years ago

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Presentation on theme: "III. Acid Deposition."— Presentation transcript:

1 III. Acid Deposition

2 Measuring Acidity Normal rainfall – slightly acidic (pH 5-6)
NE U.S. precipitation – pH of 3-4

3 How Acid Deposition Develops

4 Effects of Acid Deposition
Corrosion of metals & building materials Erosion of historic sites & monuments Declining aquatic animal populations  acidic lakes & streams Acid causes toxic metals to dissolve and enter food web  declining fish pops. Thins bird eggs  declining bird pops. Soil degradation  reduction of calcium Forest Decline

5 Acid Deposition & Aquatic Life

6 Acid Deposition & Forest Decline

7

8 Politics of Acid Depositon
Acid deposition not limited to locations where it originates. IL, IN, MO, OH, PA, TN, WV produce % of acid deposition that contaminates New England and southeastern Canada

9

10 Facilitating the Recovery of Acid Depositon

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