In general, contaminated groundwater will be naturally cleaned faster by circulation through porous and permeable sands than by circulation through fractured, crystalline igneous and metamorphic rocks.
a. true
b. false
Ans: a. true
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Which of the following was most important in encouraging suburban sprawl?
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Which of the following, according to the video is NOT a contributing factor of the urban heat island effect?
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a. True b. False