Why does subsurface mining have less of an environmental impact than surface mining?
A. Subsurface mining disturbs less than one-tenth as much land.
B. Subsurface mining does not produce any water pollution.
C. Subsurface mining does not produce acid mine drainage.
D. Subsurface miners are not exposed to air pollution.
E. Subsurface mining is guaranteed to produce fewer waste products.
Answer: A
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