In order for an aquifer to be useful for reliable water extraction, what kind of porosity and permeability should it have?
A) Low porosity, low permeability
B) High porosity, high permeability
C) Low porosity, high permeability
D) High porosity, low permeability
Answer: B
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A. the Netherlands B. Germany C. Norway D. the United Kingdom
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a. Impact of asteroids, comets, and debris b. Gravitational compression c. Accumulation of decaying radioactive elements d. A combination of all of these choices
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A. 1-2 ?m B. 1-2 pm C. 1-2 mm D. 1-2 cm E. 1-2 nm
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A. a map showing contours of the water table and of contamination levels B. records of health problems, like leukemia, of people living in the area C. records of how much material the company may have spilled D. a geologic map