A radio ad is promoting the increased use of E85 fuel as being economically and environmentally beneficial. There is no mention of disadvantages. You should be skeptical of this ad because ________
A) ethanol fuel may lead to an increase in food prices
B) it may take more energy to produce the ethanol than it contains
C) only certain cars are designed to run on this fuel blend
D) fossil fuels are required to produce the ethanol required for this blend
E) All of these are reasons to be skeptical.
E
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In the U.S., manufacturing centers are generally clustered in the:
A) old Northeastern manufacturing belt
B) deep South
C) Midwest
D) valleys along the Mississippi River
E) cities along the Mississippi Delta
The broad circulatory patterns of the major surface ocean currents are called:
a. streamlines. b. gyres. c. eddies. d. Rossby waves.
Average atmospheric CO2 concentrations have ____ over the past 100 years
A) slightly decreased B) remained constant C) significantly decreased D) increased
The diffusion of jeans is a good example primarily of the
A) diffusion of popular culture. B) adoption of unique folk culture. C) impact of high income on clothing habits. D) opposition to globalization. E) synthetic textiles replacing natural fibers.