16. National ambient air quality standards (NAAQS) Are set using benefit-cost analysis b. Are established using a benefit-based decisions rule c. Achieve efficient levels of abatement for the criteria pollutants d. All are correct Both (a) and (c) are correct 17. The choice to preserve agricultural land or sell it to a developer is biased toward development by each of the following except a. Property taxes b. Zoning C . Undervaluing environmental amenities d. Increased public awareness of the benefits of conservation e . Transportation subsidies 18. Most of the world's water withdrawals are used for... a. Cooling power plants b. Producing consumer goods c. Irrigation d. Municipal water supplies e. Raising farm animals 19. Which one of the following is an example of demand-side water management? a. Expanded development of groundwater aquifers b. Desalination c. Building larger dams d. Increasing water prices Building small dams 20. The main problem with using groundwater to increase water supplies is that... a. Groundwater tends to be contaminated with pesticides b. Groundwater is normally found in countries that already have enough supplies c. Groundwater aquifers are being rapidly depleted d. Groundwater tends to be too salty e. Groundwater tends to be too expensive