AnswersGA-GSE World Geography BAltering the Environment

Altering the Environment — Unit test Answers

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Contour plowing, no-till planting, and planting trees to serve as wind buffers are all methods used to __________. A. reduce erosion B. farm organically C. conserve water D. increase crop yields Please select the best answer from the choices provided.

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Which of the following terms best describes the use of environmentally friendly farming methods to conserve soil and water? A. slash-and-burn farming B. sustainable agriculture C. conservation D. ecology Please select the best answer from the choices provided.

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Which of the following diseases is spread by mosquitoes and most often found in tropical urban areas? A. dengue fever B. malaria C. sleeping sickness D. HIV/AIDS Please select the best answer from the choices provided.

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Which of the following is an example of shifting cultivation? A. hunting and gathering B. crop rotation C. slash-and-burn farming D. planting a vegetable garden Please select the best answer from the choices provided.

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One drawback of desalination is the __________ associated with the process. A. expense B. technology C. water pollution D. reverse osmosis Please select the best answer from the choices provided.

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Desalination is best described as __________. A. creating seawater from freshwater B. creating freshwater from seawater C. combining freshwater with seawater D. combining rain water with ground water Please select the best answer from the choices provided.

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The majority of scientists predict that the rise in global temperature by 2100 will range from __________. A. 1° F to 4° F B. 2° F to 10° F C. 5° F to 15° F D. 10° F to 20° F Please select the best answer from the choices provided.

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Describe two technologies that humans have used to overcome environmental challenges in Dubai.

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Responses may vary but should include some or all of the following information: Humans face two major environmental challenges in Dubai. The first is the lack of freshwater resources. The second is the warm and dry climate, which exacerbates pressure on scarce freshwater resources. Rapid population growth due to the discovery of petroleum in the 1960s has dramatically increased the demand for freshwater. Two technologies have helped humans survive in Dubai despite these significant environmental challenges. The invention of climate control technologies like evaporative cooling and air conditioning have allowed humans to survive in a climate with an average daily temperature of 90 degrees. The technology of desalination, which transforms saltwater into freshwater resources through the process of reverse osmosis (the heating and filtering of saltwater), has provided Dubai with 90 percent of its freshwater needs.

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Explain how water pollution affects marine ecosystems.

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Responses may vary but should include some or all of the following information: Industrial, agricultural, and municipal runoffs pollute coastal areas, creating dead zones for fish.

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Examine the diagram.

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The environmental problems are not caused by people.
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The environment is too complex for people to understand it.
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People change the environment in different ways, which causes human behavior to change.
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Humans are part of the environment, so they cannot have a large impact on the environment.
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deforestation
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destruction of animal habitats
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pollution of land and water
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saving endangered species
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conservation of land
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They use a large share of natural resources per person.
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They build roads and factories that contribute to pollution.
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They clear land by removing trees from forests and wooded areas.
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They practice conservation of land and resources when they move.
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They change waterways to reduce flooding and provide drinking water.
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Analyze the benefits and costs of the construction of the Aswan Dam.

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Responses may vary but should include some or all of the following information: The construction of the Aswan Dam in Egypt has provided many benefits, but they have come with a cost. Benefits include the creation of Lake Nasser, one of the world’s largest artificial lakes; the production of hydroelectricity to supply 15 percent or more of Egyptian energy needs; and the elimination of unpredictable seasonal flooding. Costs associated with the dam include the displacement of thousands of Nile Valley residents in Egypt and Sudan; the reduction of fertile soil deposits, which has changed native plant species and required the use of more artificial fertilizers in agricultural production; and the billion-dollar price tag of the dam’s construction.

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Which is an example of humans adapting to their environment?

developing air conditioning to cool homes in hot climates
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cutting down forests to create open land to build a factory
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relying on government agencies to clean up after natural hazards
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building a fish ladder so salmon can swim past a dam to get to spawning grounds
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The term "global warming" refers to __________. A. the warming of regions of the Earth during the summer B. increased average temperatures on the Earth's surface C. changes in temperature as a result of decreased ozone D. daily changes in temperature, from sunrise to sunset Please select the best answer from the choices provided.

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