Miscanthus is a hardy perennial grass that can be grown just to produce ethanol to replace some of the gasoline used to fuel automobiles. Unlike using corn grains to produce ethanol, the use of this grass to produce ethanol requires
A) more fossil fuels than it currently saves.
B) additional fertilizers and irrigation.
C) prime soil that would otherwise be used to grow food crops.
D) enzymes that break down cellulose to produce sugars.
D
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Rocks closer to an igneous intrusion pluton generally ________ metamorphism than those farther away
a. undergo more b. undergo less c. have the same extent of
Ninety percent of the world's population growth in the next century is expected to occur in
A. India B. China C. Less-developed countries D. Developed countries E. Moderately developed nations
Judge the following sentence according to the criteria given below: Accretionary terrains are much less
likely to develop around the margins of the Atlantic Ocean than the Pacific BECAUSE the Pacific Ocean is much larger in area than the Atlantic. a. The assertion and reason are both correct, and the reason is valid. b. The assertion and reason are both correct, and the reason is invalid. c. The assertion is correct and the reason is incorrect. d. The assertion is incorrect and the reason is correct. e. Both the assertion and the reason are incorrect
Australia’s famous Uluru (Ayer’s Rock) is what type of rock?
a. igneous rock b. asthenospheric rock c. sedimentary rock d. mantle lid rock e. metamorphic rock