Which of the following can be caused by overpumping of groundwater?
A) Land subsidence
B) A change in the flow direction
C) The destruction of an aquifer
D) All of these can be caused by overpumping.
D) All of these can be caused by overpumping.
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Coal continues to be the main fuel used to generate electricity in the United States. This is partially because ________
A) coal causes almost no air pollution when burned B) the country has such large reserves of coal C) the quality of coal in the United States is very consistent from deposit to deposit D) coal deposits in the United States lie very close to the surface and are easily extracted E) compared to natural gas and oil, coal contains very few impurities, such as sulfur
On a cloudy day, Earth's surface receives
A) direct insolation. B) diffuse radiation. C) direct radiation. D) a reduced daylength.
Waves and currents are essentially the same thing.
Answer the following statement true (T) or false (F)
Which of the following deserts are Subtropical Deserts?
a. The Sahara Desert b. The Atacama Desert c. The Kalahari Desert d. Both a and c e. Botha and b