What happened in the San Joaquin Valley as the result of excessive groundwater pumping?
What will be an ideal response?
The San Joaquin Valley subsided tens of feet due to excessive groundwater mining, and, due to the composition of the valley floor, the aquifer largely cannot be recharged. The Corcoran Clay has compressed irreversibly due to the removal of groundwater.
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Which of the following is NOT a good source region for air masses?
A) central Canada B) the Gulf of Mexico C) the central United States D) the North Pacific
Prehistoric earthquakes may be interpreted using faulted pond sediments. The amount of offset of sediment layers from one earthquake is proportional to the ________.
A. isostatic anomaly B. earthquake magnitude C. amount of time since the last major earthquake D. amount of radioactive material in the sediment
Which type of energy source do you think will grow as a proportion of total commercial energy in the future in the United States?
What will be an ideal response?
Central Asia was regarded by Czarist administrators and Soviet planners as a(n):
A) source of mineral wealth B) uninhabited desert C) source of cultural unity for Russians D) peripheral, underdeveloped region