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← GeographyWhich outcome results near mine tailings piles during periods of heavy precipitation?
A)Increased heavy metal bioavailability to plants✓
B)Decreased risk of spontaneous combustion
C)Stabilization of previously unstable slopes
D)Enhanced carbon sequestration in soil
💡 Explanation
Acid mine drainage increases heavy metal bioavailability because the enhanced water percolation through mine tailings promotes acid generation and subsequent leaching of metal ions. Therefore, the metals become more accessible to plants, rather than being safely contained, sequestered, or slope stabilized.
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