Which describes the process of the ground collapsing over an underground coal mine?
A. land subsidence
B. meltdown
C. fracking
D. infiltration
Answer: A
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Over the past 60 years, the number of sovereign state memberships in the United Nations
A) has remained approximately the same. B) has increased by 30 countries. C) has decreased by 30 countries. D) has increased by more than 50 countries. E) has increased by more than 100 countries.
The water table in the Investigation was lowest in elevation along the
A. west edge. B. south edge. C. east edge. D. north edge.
Igneous rock is formed from
A. lava that freezes on Earth's surface. B. high temperatures and pressures acting on subsurface rock. C. crystallization of magma. D. all of the above
Which of the following would not be a preferred characteristic of a good aquifer?
A) High permeability B) High porosity C) Unsaturated pores D) All of these are correct.