Which risk increases for coastal wetlands when longshore drift is interrupted by artificial groynes?

💡 Explanation

Wetland subsidence becomes more likely because groynes trap sediment via longshore drift preventing its natural distribution, therefore wetlands starve rather than accreting sediment. Saltwater intrusion is more related to sea-level rise and surge relates to bigger storms.

• Which outcome increases on coastlines with abundant stacks?
• Large sinkhole formation accelerates when which geochemical mechanism intensifies?
• Which outcome is accelerated within a volcanic dome composed primarily of rhyolite as hydrothermal activity intensifies?
• Which risk increases when construction occurs atop an ancient, inactive fault line within a large alluvial basin?
• Which outcome is initiated by thermohaline circulation changes affecting ocean streams?
• Which effect amplifies trade wind deflection at low latitudes?