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83% (01:30) correct
17%
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wrong
based on 448
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The use of biofuels manufactured from crops such as corn and sugar cane to replace petroleum products should benefit the environment. This is due to a reduction in fossil fuel use and in greenhouse gas emissions. At first, this technology seemed to have the desired effect. However, the United Nations recently determined that the use of biofuels threatens the environment.
If true, which of the following statements would best explain the apparent discrepancy described above?
(A)The price of oil has fluctuated considerably over the five years since biofuels began to become more widely used.
(B) Petroleum products are still cheaper to extract than biofuels are to produce
(C) Biofuels are currently produced from crops that would otherwise be used as food, creating potential shortages in land, water, and food in many countries worldwide.
(D) The amount of greenhouses gases being pumped into the atmosphere has steadily increased over the past two decades and is projected to further increase in the future.
(E) Prior to the use of biofuels, other alternatives, such as hydrogen power, were thought to be more promising.
If true, which of the following statements would best explain the apparent discrepancy described above?
(A)The price of oil has fluctuated considerably over the five years since biofuels began to become more widely used.
(B) Petroleum products are still cheaper to extract than biofuels are to produce
(C) Biofuels are currently produced from crops that would otherwise be used as food, creating potential shortages in land, water, and food in many countries worldwide.
(D) The amount of greenhouses gases being pumped into the atmosphere has steadily increased over the past two decades and is projected to further increase in the future.
(E) Prior to the use of biofuels, other alternatives, such as hydrogen power, were thought to be more promising.
27 Mar 2017, 04:34
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Can someone explain how , option C accounts proves that biofuels threatens the environment . Thanks.
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