2. Explain why temperature decreases with height in the troposphere but increases with height in the stratosphere.
3. The Environmental Protection Agency uses the slogan “Good in the Sky, Bad Nearby” to help people remember the differences between the two types of ozone. Explain what this statement means.
4. Explain the chemical reaction that forms ground-level ozone.
5. Explain who would be the most affected by a level red ozone day, the problems they might experience, and how the effects could be reduced.
6. Discuss the relationship between ozone pollution, crop production, nitrogen run-off in water supplies, and soil fertility.
7. The Environmental Protection Agency passed the Clean Air Act in 1970. The graphs show a reduction in ozone pollution since that time, but it has not been completely eliminated in spite of government regulation. Explain this fact.
8. Explain why most ozone in the stratosphere forms in the tropics but accumulates in polar regions.
9. New Zealand and Australia have the highest skin cancer rates in the world. Explain the relationship between the cancer rate and the ozone hole over Antarctica.
10. Explain why a small amount of CFC is able to destroy thousands of ozone molecules.
11. Describe the relationship between Antarctic weather and the ozone hole.
12. Scientists sometimes use a particular organism as an indicator of change in the environment. Phytoplankton is an indicator organism. What changes would scientists observe in phytoplankton due to damage in the ozone layer? How do these changes affect other organisms?
13. Explain the purpose of trade sanctions and incentives for countries to sign the Montreal Protocol.