SCI 207 Quiz Essay

1726 WordsNov 11, 20147 Pages
SCI 207 Quiz Week 2 Quiz – correct response is marked with asterisk (*) 1. Question: A decrease in “food miles” will most likely increase the environmental impact of any given food. True False * Question 2. Which of the following statements about ground water is not true, according to your text? Underground aquifers hold approximately 99% of all the liquid fresh water. More than 75% of underground water has a replenishment time of centuries or more, making it non-renewable. Increased water withdrawal from underground aquifers makes them more susceptible to droughts. Depletion of ground water may lead to land compaction that in turn decreases its ability to store water. All of the statements about ground water are true. *…show more content…
True * False Instructor Explanation: The answer can be found in Section 5.2 of your text. Question 8. What is the central theme of “The first green revolution” section in Chapter 3.1 of your text? The green revolution resulted in increased crop production without any environmental concerns, which generated a steep incline in human population growth. The green revolution allowed for a rapid increase in high yield crops through the use of genetically modified seeds that allowed developing nations to survive in the face of famine. The green revolution led to increases in crop production and human population. However, it also created a number of environmental concerns including the overuse of fertilizers and irrigation. * The green revolution allowed farmers to increase crop yields and profits substantially over a short period of time. None of the above are the central theme. Instructor Explanation: The answer can be found in Section 3.1 of your text. Question 9. Which of the following is an environmental concern of genetically engineered crops mentioned in your text? Genetically modified crops lead to larger applications of toxic herbicides and insecticides. The genetic modification of crops increases soil erosion while decreasing soil fertility. Genetic engineering is less precise than traditional methods of crossbreeding. Genes from genetically

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