1. Which of the following statements about desalination is


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I attach my questions. Please help me to answer all of them. thank you! ATTACHMENT PREVIEW Download attachment question.docx 1. Which of the following statements about desalination is true? a. The common methods of desalination are reverse osmosis and transpiration. b Desalination is expensive. . c. The removed salt can be dumped back into the ocean with no real concerns. d Desalination is the best approach to solving irrigation problems. . e. Desalination is the best method of acquiring clear water for drinking. 2. Floods and droughts are a. strictly natural disasters b. influenced by human activities c. decreased by increases in human population d. independent of human activity e. always predictable and cyclic 3. What proportion of food products sold on U.S. supermarket shelves contains some form of genetically engineered crop? a. 20 % b. 30 % c. 50% d. 60 % e. 70 % 4. Monoculture is a method of growing food that is utilized solely in a. industrialized agriculture b Polyculture . c. traditional subsistence agriculture d traditional intensive agriculture . e. both industrialized agriculture and traditional intensive agriculture 19 5. Our economic systems promote unsustainable forms of industrialized agriculture because a. they so successfully provide healthy food to our populations b they do not include most of the harmful environmental and health costs of such food . production in the market prices c. they are so effective in cutting costs d they provide so many jobs . e. the modern food production system is not efficient 6. Most soil erosion is caused by a. wind and moving water b Photosynthesis . c. earthquakes d volcanoes . e. excess heat 7. Which country pays landowners to restore tree cover? a. Panama b Bolivia . c. Costa Rica d China . e. Norway 8. In the United States, most ethanol is produced from: a. switchgrass b. leftover stalks from crops c. sugar cane d. corn 9. Which of the following fossil fuels produces the most air pollution per unit of heat produced? a. oil b. natural gas c. coal d. all three above produce equivalent amounts of air pollution 10. a. b. c. d. Crude oil is found in rock structures known as: scrubbers structural traps power grids tar pits 11. Groundwater is stored in porous underground structures called aquifers T or F 12. The Colorado River Basin is about 70% within the South West USA, and 30% within Northern Mexico. T or F Read more

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