Which consequence most directly results from differential erosion around coastal sea stacks?

💡 Explanation

Coastal caves and arches form near stacks because wave action preferentially erodes weaker rock layers via hydraulic action. Therefore caves can grow on weaker layers, rather than uniform erosion of the stack's base producing simple undercutting.

• Which biogeochemical effect typically follows enhanced coastal upwelling along continental margins?
• Which increasing risk results when intense rainfall interacts with existing karst topography?
• Which process drives the thermohaline circulation when surface water become denser?
• Which risk increases because of reduced flow velocity in an oxbow lake compared to the main river channel?
• Which factor most directly elevates the likelihood of explosive volcanism along subduction zones?
• Which risk escalates dramatically where loess deposits form thick, unconsolidated layers?