ENVS 1126 FINAL (LSU FALL DE JESUS CRESPO) EXAM QUESTIONS AND ANSWERS | 100% GUARANTEED PASS

ENVS 1126 FINAL (LSU FALL DE JESUS CRESPO) EXAM QUESTIONS AND ANSWERS | 100% GUARANTEED PASS The harvest of organisms is more likely to be sustainable if organisms are captured - answer-after they have begun reproducing. Contagious disease - answer-density-dependent factor that controls the population A disproportionately high placement of toxic waste sites in regions of the United States populated by minorities most likely indicates - answer-Environmental racism and justice Added in the form of heat as energy is passed up a food chain - answer-Energy Often the result of topsoil erosion leading to a permanent reduction in productivity - answerDesertification The ability of an ecosystem to replenish itself leads to - answer-Sustainability Anaerobic conditions will most likely be generated in a natural water system with - answer-low levels of DO that is contaminated by pollutants with high BOD values Adding fertilizer to most aquatic systems results in - answer-increased growth of phytoplankton and hypoxic conditions Example of Non-point source of pollution - answer-storm-water drainage from the parking lot around a football stadiumIn most developed countries, non-recycled MSW is more likely to be - answer-buried when the population densities are high Acronyms such as NIMBY, BANANA, NIMTOO, LULU summarize the - answer-perceptions of people regarding where to build landfills What is sludge cake? - answer-dewatered, semisolid, humus-like sludge that is spread over fields (T/F) R-strategists have high biotic potential and good recruitment most of the time - answer-True There has been a catastrophic spill of cow manure in the local University Lake. The water is now more turbid and some fish are dying. You collected a sample of lake water before and after this catastrophe. You measured the BOD (Biological Oxygen Demand) in both water samples. How would you expect the BOD to change as a result of the spill? - answer-The BOD will increase. The figure shows concentrations of CO2 in the atmosphere from the late 1950's to the present time. In addition to the long-term trend of increasing CO2 concentrations also oscillate up and down by several parts per million on an annual basis. During a period of one year, at what time of year would you expect the concentrations to be highest? - answer-Winter A gas that causes respiratory irritation in animals and tissue damage in plants when it is in the troposphere but can reduce cancer rates when it is in the stratosphere - answer-O3 Example of primary succession - answer-Lichens appear on basalt rock 50 years after a volcanic eruption on the Big Island of Hawaii This country currently has the highest fertility rate - answer-United States Accounts for the greatest percentage of the greenhouse effect - answer-Carbon Dioxide