Which outcome occurs when wave action undermines a coastal arch, forming offshore stacks?

💡 Explanation

Removal of key structural support by differential erosion causes increased wave energy acting on nearby land, because the dissipation by the arch is removed; therefore storm impacts increase, rather than different sedimentary actions.

• Which process shapes the islands due to wave refraction?
• Which process triggers oxbow lake sediment infilling following channel avulsion?
• Which outcome commonly occurs when fault creep is persistently interrupted?
• Which phenomenon increases when topsoil experiences reduced throughflow?
• Which process explains pyroclastic flow formation during Plinian volcanic eruptions?
• Which outcome is initiated when excessive pyroclastic material accumulates?