What do geologists call the subsurface reservoir consisting of permeable rock that can transmits water freely?
a. Confining layer
b. Vadose zone
c. Aquifer
d. Aquitard
Answer: c. Aquifer
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Why might an area with a large amount of limestone (CaCO3) be less susceptible to acid rain?
A. Only acid rain made from sulfur compounds reacts with the limestone. B. The acid in the rain is neutralized by the natural base in the limestone. C. The rain travels quickly through the porous limestone, and therefore, the rate of reaction is slower. D. Limestone is degraded by acid rain, and therefore, acid rain has the same damaging effects. E. none of the above
The largest practical potential source of fresh water in the world is
A) soil moisture. B) lakes. C) groundwater. D) stream discharge. E) ice sheets and glaciers.
Today, many of the old dumps and landfills from past decades are now
A) festering sites of toxic waste that must be fenced off and restricted. B) parks and recreational areas widely used by the public. C) being mined for the resources that were buried over several decades. D) deep depressions, resulting from the decay of most of the materials that were buried long ago.
The daily mean temperature is determined by ________
A) summing the temperature measured every hour and dividing by 24 B) summing the maximum and minimum temperatures daily and dividing by 2 C) summing the digital samples of temperature in several places at different times of day and averaging those samples D) measuring the temperature at noon E) none of the above