1. 1 Students type their answers here Primary pollutants are those that are A. Released directly in dangerous forms B. Produced in the greatest quantities C. The most dangerous D. The most threatening to people E. Classified by the EPA as the most dangerous and abundant

2. 2 Students type their answers here Fugitive emissions are produced by A. Smokestacks B. Power plants and other heating equipment C. Reactions between pollutants and atmospheric gases D. Strip mining, rock crushing, and other dust- producing activities E. Industry and must go through a smokestack for filtration

3. 3 The term NOx is often used because A. There are many different oxides of nitrogen B. It is usually unclear how oxidized nitrogen is C. NO2 and NO easily convert into each other D. Many different molecules often attach to NO E. The pollutant is a nitrous oxide and the "Ox" identifies the oxygen Students type their answers here

4. 4 Carbon monoxide is produced by A. Normal respiration by animals B. Normal respiration by plants C. Incomplete burning of fuels D. Photochemical oxidation of carbon E. The burning of sulfur-laden coal Students type their answers here

5. 5 Anthropogenic sources of carbon dioxide levels in the atmosphere are A. Increasing at the rate of about 0.5 percent per year B. Easily determined with recent technological advances C. Measured with a great deal of precision D. All offset by carbon storage in northern forests E. All of these are correct Students type their answers here

6. 6 Many fish contain high levels of _____________ and should either not be eaten or their consumption should be limited. A. Lead B. Mercury C. Chloroform D. Ozone E. Chlorophyll Students type their answers here

7. 7 Photochemical oxidation reactions are driven by A. The great instability of the reactants B. The heat of industrial activity C. Solar energy D. Entropy E. Light, regardless of whether it is the sun or indoor light Students type their answers here

8. 8 Which of the following statements is true? A. Most carbon monoxide produced in the United States comes from internal combustion engines (cars). B. Nearly all emissions of sulfur compounds are anthropogenic. C. Overall, in the past twenty years, air pollution conditions have steadily decreased in most North American and Western European cities. D. Volatile organic compounds are produced exclusively by human activity. E. None of these is correct. Students type their answers here

9. 9 Which of the following statements is false? A. The likelihood of having radon gas in your home depends largely upon the geology and soil types in your region. B. According to the EPA, toxic air pollutants are generally much more concentrated indoors than outdoors. C. One of the reasons indoor air pollutants are so dangerous is the high amount of time people are indoors. D. In the less-developed countries of Africa, Asia, and Latin America, there is less indoor air pollution than in developed countries. E. All of these statements are true. Students type their answers here

10. 10 Stable air masses over cities and warm updrafts between tall buildings often create _________ in and near cities. A. Dust domes of suspended pollutants B. Cyclonic dust storms C. Convective rain storms D. Low pressure zones that dissipate pollution E. High pressure zones that dissipate pollution Students type their answers here

11. 11 Native peoples living in the Canadian Arctic have some of the highest recorded PCB concentrations in their bodies because of A. Unusually high susceptibility to contamination B. Concentrated natural occurrence of PCBs in that region C. Local production of PCBs D. Long-range transport of airborne pollutants E. An industrial accident that left the persistent PCBs in the environment Students type their answers here

12. 12 The "ozone hole" is a depletion currently most serious A. At the most populated latitudes B. Over North America C. In tropical latitudes D. Near the equator E. In Antarctica Students type their answers here

13. 13 There are serious signs that ozone depletion may lead to A. Increased incidence of skin cancers B. Increased incidence of blindness C. Depletion of plankton populations D. Reduced agricultural production E. All of these Students type their answers here

14. 14 There are serious signs that ozone depletion may lead to A. Increased incidence of skin cancers B. Increased incidence of blindness C. Depletion of plankton populations D. Reduced agricultural production E. All of these Students type their answers here

15. 15 If stagnant air is trapped in the lung alveoli, the air sac swells and A. Blood circulation is blocked B. Cells die from lack of O2 C. Cells die from lack of nutrients D. The walls of the alveoli break down and are no longer able to exchange gases E. All of these occur Students type their answers here

16. 16 Sudbury, Ontario's copper-nickel smelter is notorious for having A. Destroyed the local ecosystem with sulfur-laden smoke B. Caused brown lung disease in miners C. Spread cyanide in nearby rivers D. Caused childhood leukemia in nearby neighborhoods E. Caused all of these

17. 17 Pollutants such as sulfur dioxide and ozone cause A. Relatively little damage to plants B. Mortality in most plants C. Reduced yields in crop plants as well as visible damage D. Damage only to highly sensitive plant species E. Immediate chlorosis and then death to most plants Students type their answers here

18. 18 Which of the following is the best example of synergistic effects? A. The disappearance of plant life around Sudbury, Ontario B. The prevalence of cancer among smokers exposed to asbestos fibers C. The appearance of PCBs in residents of remote Arctic villages D. Cancer caused by fibrosis in the lungs E. Chlorosis in plant leaves

19. 19 One of the principal ways lakes suffer from acid deposition is that A. Rocks on the bottom begin to dissolve B. Fish eggs die and fish populations fall C. Aquatic vegetation turns yellow D. Plants grow excessively and choke other life E. All of these can happen in a lake from acid deposition

20. 20 What type(s) of building(s) and monument(s) is(are) most susceptible to acid damage? A. Granite and basalt B. Wood C. Limestone and marble D. Concrete and brick E. Brick and bronze Students type their answers here