GEF

Unit 3  |  Primary Sustainability Issues 84 3. Which of these statements best explains why the depletion of oil reserves represents a serious threat to countries today? a. Oil is a key resource and raw material in industrial economies. b. Production has declined significantly so that oil is no longer viable. c. Scientists all agree that we have passed the peak oil date. d. There are only two fossil fuels readily available in liquid form. 4. Which of the following renewable energies is the most globally used? a. Solar b. Wind c. Geothermal d. Hydropower 5. Which of the following forms of renewable energy can negatively affect food prices? a. Corn-based ethanol used in gasoline for automobiles b. Wind energy turbines for urban use c. Solar energy panels used on commercial buildings d. Geothermal energy systems established near tectonic plates 6. Which of the following best explains why there is instability in the global food system? a. Corrupt governments create record high food prices. b. Food shortages, major riots, and cold temperatures exist in rural areas. c. Inefficiency, inequality, and waste exist in production and distribution. d. There are too many people and not enough healthy food to go around. 7. What was a major cause of the “green revolution” in agriculture? a. Worldwide growth of organic farming b. Rise of green farmer organizations in less developed countries c. Development of hybrid crops that dramatically increased crop yields d. Decrease in demand for corn in the industrialized countries