Environmental Science 14th Edition by Tyler Miller ,Scott Spoolman

Exercise 21

What are the two key concepts for this section How have human activities depleted ozone in the stratosphere List five harmful effects of such depletion. Describe how scientists Sherwood Roland and Mario Molina helped to awaken the world to this threat. What has the world done to help reduce the threat of ozone depletion in the stratosphere What are the three big ideas for this chapter Explain how the three principles of sustainability can be applied to dealing with the problems of air pollution, climate change, and ozone depletion.