To transform an igneous rock into a sedimentary rock, which of the following processes must take place?
A) melting and recooling, followed by crystallization
B) chemical reactions under conditions of elevated temperature or pressure
C) weathering, transport, deposition, and lithification
D) impact by a meteorite
Answer: C
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Which of the following has the highest boiling point?
A) heptane B) hexane C) octane D) nonane
Areas of oceanic crust tend to stand at ________ than do areas of continental crust
A) lower elevations above the mantle B) higher elevations above the mantle C) lower elevations below the mantle D) higher elevations below the mantle
Which of the following describes a thunderstorm cloud's electrical charge?
A. It is positive in the upper parts and negative in the lower parts. B. It is negative in the upper parts and negative in the lower parts. C. It is positive in the upper parts and positive in the lower parts. D. It is negative in the upper parts and positive in the lower parts.
How do treadmills of production tend to make the economy act like it has “invisible elbows”?
a) By deliberately and inadvertently causing environmental degradation b) By battling for economic survival of the fittest c) By guiding all towards prosperity due to competition d) All of the above