Which of the following technologies helped shale gas become an important resource?
A. hydraulic fracturing
B. directional drilling
C. Both of these choices are correct.
D. Neither of these choices are correct.
Answer: C
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The horizontal transport of warm air is known as
A) a short wave. B) vorticity. C) warm air advection. D) diffluence.
Incoming radiation is mostly in the form of:
A) infrared radiation. B) visible light and ultraviolet radiation. C) gamma rays. D) cosmic rays.
The oldest layer in this tilted sequence of sedimentary rocks is
A. the layers on the lower left part of the photograph. B. at the top of the hill in the center of the photograph. C. the darkest layer. D. the layers on the right of the photograph.
Which of the following is an example of an oceanic-continental convergent plate boundary?
A) Aleutian Islands B) Andes Mountains C) Himalaya Mountains D) Mendocino Fault E) San Andreas Fault