Environmental Problems, Their Causes, and Sustainability 1

9. Congratulations! You are in charge of the world. Listyour three most important actions for dealing with theproblems of (a) global warming and (b) depletion ofozone in the stratosphere.PROJECTS1. As a class, conduct a poll of students at your school todetermine (a) whether they understand the differencebetween global warming of the troposphere and ozonedepletion in the stratosphere (Table 21-2, p. 467) and(b) whether they believe global warming from an enhancedgreenhouse effect is a very serious problem, amoderately serious problem, or of little concern. Tally theresults to see whether there are differences related toeach poll participant’s year in school, political leaning(liberal, conservative, independent), and sex.2. As a class, conduct a poll of students at your school todetermine whether they believe stratospheric ozone depletionis a very serious problem, a moderately seriousproblem, or of little concern. Tally the results to seewhether there are differences related to each poll participant’syear in school, political leaning (liberal, conservative,independent), and sex.3. Use the library or the Internet to determine how thecurrent government policy on global warming in thecountry where you live compares with the policy suggestionsmade by various analysts and listed in Figures 21-17(p. 479) and 21-20 (p. 483).4. Write a 1- to 2-page scenario of what your life could belike by 2060 if nations, companies, and individuals donot take steps to reduce projected global warming causedat least partly by human activities. Contrast your scenariowith the positive scenario at the opening of thischapter. Compare and critique scenarios written by othermembers of your class.5. If you drive a car, calculate how much CO 2 it emitsper day by taking the number of miles you drive, multiplyingit by 20, and dividing the result by the number ofmiles per gallon your car gets. If you use the metric system,multiply the kilometers driven by the number ofliters of gasoline it takes to drive your car 100 kilometersand divide the result by 42 to get your daily CO 2 emissionsin kilograms. In either case, add another 20% to includethe CO 2 emitted in manufacturing the gasolineyou used. Compare your results with other members ofyour class.6. Use the library or the Internet to find bibliographic informationabout Paul A. Colinvaux and Margaret Mead,whose quotes appear at the beginning and end of thischapter.7. Make a concept map of this chapter’s major ideas, usingthe section heads, subheads, and key terms (in boldface).Look on the website for this book for informationabout making concept maps.LEARNING ONLINEThe website for this book contains study aids and manyideas for further reading and research. They include achapter summary, review questions for the entire chapter,flash cards for key terms and concepts, a multiple-choicepractice quiz, interesting Internet sites, references, and aguide for accessing thousands of InfoTrac ® College Editionarticles. Log on tohttp://biology.brookscole.com/miller14Then click on the Chapter-by-Chapter area, choose Chapter21, and select a learning resource.490 CHAPTER 21 Climate Change and Ozone Loss