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← GeographyWhich ecological outcome results when groundwater extraction lowers the water table near a barrier island?
A)Saltwater intrusion into freshwater aquifers✓
B)Increased sand deposition on beaches
C)Stabilization of dune vegetation communities
D)Enhanced sediment transport to offshore reefs
💡 Explanation
Saltwater intrusion occurs because decreased freshwater pressure allows **capillary action** to draw saltwater inland, thus contaminating aquifers; therefore the answer is saltwater intrusion rather than dune vegetation stabilization, which relies on positive water availablity.
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