What do scientists use to show the locations and sizes of various rock formations that may contain oil?
A. geologic maps
B. topographic maps
C. tables of drilling information
D. three-dimensional seismic maps
E. satellite maps
Answer: D
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China's late -twentieth-century economic reform
A) was inaugurated during the Cultural Revolution B) led to growth rates exceeding 10 percent per year. C) embraced communist principles espoused by Mao Zedong D) led to the strongest growth during the "Great Leap Forward." E) resulted in a major recession in the 1990s
What statement is true of biogenous and terrigenous sediments?
a. Biogenous sediments comprise a larger area than terrigenous sediments. b. Biogenous sediments cover more volume than terrigenous sediments. c. Terrigenous sediments make up a larger area than biogenous sediments. d. Terrigenous and biogenous sediments are equal in area and volume.
Although we don't know for sure, changes in the strength and orientation of earth's magnetic field are most likely due to
A) fluctuations in outer-core convection. B) variations in sea-floor spreading rates. C) the total number of mantle hot spots. D) changes in the velocity of subducting plates.
In the cut-and-fill method, ____
A)benches are cut into a hillside B)material is removed from the up a slope and placed at the base C)retaining walls are constructed and anchored into bedrock D)rock bolts are fastened to stable bedrock E)material is removed from the base of a slope