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5: Which of the three communities has the lowest environmental impact? Cite evidence from Table 25-1 to support your answer. 6: Recall that one widely accepted definition of sustainability encompasses the triple bottom line of people, planet, and prosperity. Which of the three designs is the most sustainable? Which is the.
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15: Discuss whether “sustainable growth” is an oxymoron. 19: Advocates of unrestricted growth frequently argue that growth expands the tax base, which lowers the tax “burden” for everyone and thus improves the quality of life. However, the results of more than seventy community studies conducted by the American Farmland Trust indicate.
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10: Calculate the area per family member for an average U.S. house in 1940 and 2006. 11: Discuss whether you think the additional space is justified, desirable, or necessary. 12: How much lumber, sheathing, flooring, roofing, and concrete would a 2,500 ft2 house use (assuming the same proportions as the 2,082 ft2.
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6: What is the major contrast in CO2 retention between conventional and no-till agriculture? Explain why this might be an important issue. 7: Study Figure 19-4, which shows how tillage practices influence topsoil loss. How much topsoil loss is avoided during a 1”-inch rainstorm by using “no-till” agriculture compared to the plow-up/down.
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7: How much “bush meat” in total would be “harvested” from central African rain forests annually? 8: What is the doubling time for this population? (Use t = 70/r; see “Using Math in Environmental Issues,” pages 6–8) 9: What is your long-term forecast for the survival of the Congolese rain forest and.
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16: Characterize the changes in percentage of grain fed to animals over the interval. Suggest an explanation from information we presented earlier. 17: Should we discourage meat consumption or encourage grass feed instead of grain for livestock to free grain to feed the world’s hungry? Explain your answer. 18: Prime farmland is.
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The Three R’s: Reduction, Reuse, and Recycling 1: Do you think this is a useful approach to increasing recycling rates? List and evaluate other ways to increase the rate of curbside recycling. 2: Does your institution or professional team recycle at games or special events? If so, do patrons use recycling bins,.
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7: For a 25,000 square foot building over a thirty-year span, calculate which costs more to build assuming a 1 percent employee productivity increase in the LEED building staff, a conventional building or a LEED-certified building. 9: Explain whether LEED-certified buildings cost more than conventional buildings. .
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12: Speculate how life would be different in Prince William County when half the county is impervious surface. 13: Calculations such as those you did above are sometimes disputed as “unrealistic” by opponents who state, “This kind of growth can't happen!” Do you agree that such calculations have no value? Discuss.
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11: Organochlorines are produced through the chlorination of drinking water, the “purification” of treated sewage, and the bleaching of paper pulp. Chlorinated pulp liquids cannot be recycled and reused by the pulp mill and must be discharged into local water bodies. Research any of these issues and list alternatives to.
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Restoring Estuaries: Chesapeake Bay 1: What is the doubling time (see “Using Math in Environmental Issues,” pages 6–8) of the watershed’s population? 2: How many states and Canadian provinces are included in the Bay’s airshed? 3: Calculate the volume of Chesapeake Bay. The Bay’s surface area is roughly 11,000 km2, and the average.
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16: List the environmental costs and benefits of aquaculture. Discuss whether you think aquaculture can contribute a sustainable source of food for the world. 17: Bluefin tuna used to be plentiful in the Adriatic Sea. No more. Croatian fisher Lubomir Petricivic said, “You have to work a lot harder to catch.
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Soils and Sustainable Societies 1: Put 5 to 6 million hectares into context (1,580 ha = 1 mi2). How does this annual soil loss compare to the area of your state? (You can find state areas at www.enchantedlearning.com/usa/states/area.shtml.) 2: The Sierra Club and other environmental organizations have calculated that organic, pesticide-free strawberries.
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Sustainable Coastal Development 1: Growth of the magnitudes presented above has been described as a mixed blessing. What do you think this means? Be specific and use examples. 2: Carl Laundrie, a Flagler County, FlFlorida, administration spokesman, said, “There isn’t a county in the world that’s prepared for 10 percent growth” a.
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14: A significant fraction of atmospheric carbon dioxide, the most common greenhouse gas, comes from burning tropical forests, much of which were cleared to raise cattle. These cattle, in turn, release methane, a more potent greenhouse gas. Research how raising cattle contributes to global warming. Summarize your findings in a.
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Illegal Immigration: Ballast Water and Exotic Species 1: If the costs incurred during a flood are in part due to ships involved in international trade, how can these costs be fairly apportioned? Is it fair for only those people who are affected by floods in California to pay for the hidden.
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5: What role, if any, should wealthy countries play in neutralizing PCBs in developing countries? Justify your answer by listing and defending your reasons. 6: Should pregnant women, or those desiring to become pregnant, be tested for organochlorine contamination? Why or why not? 7: Discuss the topic of POPs from the perspective.
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9: Interpret your graphs. 10: Calculate average annual growth rates for both housing units and impervious surface area for the period 1940–94. How do they compare? (To answer these questions, use the equation, r = (1/t)ln(N/N0), explain in “Using Math in Environmental Issues,” pages 6–8.) 11: Using the growth rate for impervious.
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7: Discuss whether any of these developments can be called sustainable considering that each replaces natural landscape with a built environment and that many residences in this type of development are second, vacation homes. 8: This model you just examined is hypothetical, yet it is based on a real area that.
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13: Calculate the household electricity intensity (kWh per household) for a 2001 house built with the above features, which increase efficiency by 40 percent. 14: Calculate the energy savings in kWh and dollars (ignoring the $3,000 capital cost and assuming the cost of electricity as $0.08/kWh) if all 104.3 million households.
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11: With global population growing at about 1.14 percent per year, do you think that capture fisheries can supply demand on fish stocks of a burgeoning human population? Justify your answer. 12: Suggest and discuss ways to make fisheries more sustainable. 13: Sylvia Earle, former director of the National Oceanic and Atmospheric.
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6: Assume that salary and benefits combined amount to $200 per square foot in 2006. What is the annual economic benefit for the following cases: a.Employee productivity increase = 1 percent for a 25,000-square-foot building b.Employee productivity increase = 10 percent for a 25,000-square-foot building c.Employee productivity increase = 1 percent for 75.
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Global Grain Production: Can We Beef It Up? 1: Contrast the American diet with the Chinese diet. What are the most striking differences? 2: Are the Bailey and Brown statements consistent with each other? What additional information would you need in order to choose which statement(s) is/are accurate? 3: Describe the change in.
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22: Given these glimpses into the amount of wood products used in paper cups and junk mail, assess the importance of education and small lifestyle changes in protecting global forests. 27: Go to www.dnr.state.oh.us/recycling/awareness/facts/factsheets/junkmail.htm for ways to stop junk mail. Do you think advice on receiving less junk mail belongs in.
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