AP Environmental Sciencemediummcq1 pt
A major environmental risk of subsurface mining is
A.acid mine drainage and tunnel collapse
B.mountaintop removal
C.no environmental impact
D.ozone depletion
Explanation
Core Concept
Exposed sulfide minerals react with water to form sulfuric acid that poisons streams, while shafts risk collapse and subsidence.
Correct Answer
Aacid mine drainage and tunnel collapse
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