Geothermal and tidal generation of electricity are similar in that
A. both are simple technologies that can be used with little initial investment.
B. although they are effective at generating electricity, the sites where the technology can be used are very limited.
C. both have the potential to produce large amounts of electricity in many places in the world.
D. None of the statements is correct.
Answer: B
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The number of languages spoken in India is over
A. 1600 B. 2000 C. 3500 D. 4200
Winds near upper-atmospheric ridges
A) slow, converge, and descend, creating surface high pressure. B) accelerate and diverge, creating surface low pressure. C) converge aloft, creating convergence at the surface, as well. D) diverge aloft, creating divergence at the surface, as well. E) converge, but have no influence on surface circulation, which may either converge or diverge.
Large, smooth, dark areas visible on the Moon with the unaided eye are called ________.
A. glaciers B. continents C. oceans D. grasslands E. Maria
What is the usual cause of soil salinization?
A. Overdevelopment of residential areas B. Heavy irrigation on poorly drained desert soils C. Excessive soil erosion D. Excessive fertilizer additions