What phenomenon may restrict the consumption of fossil fuels, especially coal, before resources are depleted?
What will be an ideal response?
Climate issues associated with global warming from carbon dioxide emissions could limit the amount of coal burned in the United States, especially with the help of campaigns like Beyond Coal.
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Density-independent factors such as earthquakes and hurricanes are
A) abiotic factors that maintain a population near equilibrium. B) biotic factors that maintain a population near equilibrium. C) abiotic factors that are not involved in maintaining a population near its equilibrium. D) biotic factors that are not involved in maintaining a population near its equilibrium.
In the near future, the benefits of biofuel production may be enjoyed while reducing the impact on the global production of grain. One such promising approach is to ________
A) gasify coal to increase the efficiency of coal power plants B) use the large amounts of animal wastes to produce ethanol C) find ways to convert oil and natural gas into ethanol D) produce biofuels from grasses instead of corn E) bioengineer cattle and goats to produce ethanol in their milk
Smart growth or new urbanism tools include greenbelts around cities, high density cluster housing, and
a. extensive freeway networks to provide efficient travel to and from work b. taxing buildings c. taxing land instead of buildings d. no construction of expensive mass transit systems e. use of only fuel efficient personal transportation
After Egypt's 1979 accord with Israel, the headquarters of the Arab League moved from Cairo to
A. Tunis B. Algiers C. Baghdad D. Riyadh