Environmental
Oklahoma's significant earthquake activity in recent years, particularly in central Oklahoma, has been linked to:
ANatural tectonic plate movement exclusively
BInduced seismicity from disposal of oil field wastewater (saltwater disposal wells)✓ Correct
CConstruction activity in Oklahoma City
DChanges in groundwater levels from irrigation
Explanation
Oklahoma experienced a dramatic increase in seismic activity beginning around 2010, linked by scientific consensus to the injection of large volumes of oil field wastewater (produced water/saltwater) into disposal wells, causing induced seismicity.
Related Oklahoma Environmental Questions
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