An aquifer is
A. a body of rock that retards the flow of groundwater
B. a body of saturated rock or sediment through which water can move easily
C. a body of rock that is impermeable
Answer: B
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Talus forms a steep slope because it is
A. subject to soil creep. B. coarse grained and angular. C. fine grained and rounded. D. usually saturated.
The source of electrons in a common electric circuit is
A. a generator at the power station. B. usually a wall socket. C. a dry cell, wet cell, or battery. D. the electric conductor itself.
Which area receives the least amount of solar energy on Earth?
a. polar regions b. mid-latitudes c. tropical regions d. temperate regions e. equatorial regions
The Industrial Revolution has led to an increased reliance on fossil fuels to
A) power farm machinery. B) power farm machinery and to produce irrigation pumps. C) power farm machinery and to produce fertilizers and pesticides. D) develop new types of crops.