Which consequence results when groundwater extraction increases behind a barrier island?

💡 Explanation

Increased groundwater extraction lowers the water table, causing saltwater intrusion because of hydraulic gradient changes, leading to the aquifer's contamination; therefore, saltwater encroaches rather than the freshwater lens expanding, due to reduced freshwater recharge.

• Which tectonic consequence results when fault creep ceases?
• Which downslope movement results when permafrost thaws and the active layer loses shear strength?
• Which mechanism explains how mountain ranges enhance precipitation in the windward slopes, creating rain shadow effects?
• Which outcome occurs more slowly as agricultural topsoil undergoes drastic reduction in arthropod populations?
• Which oceanographic consequence results from intensification of the planetary Coriolis effect at higher latitudes?
• Which phenomenon creates crescent-shaped oxbow lakes along meandering fluvial systems?