Which outcome accelerates in a weathering sea stack subject to intense hydraulic action?

💡 Explanation

Increased undercutting occurs because hydraulic action, the mechanism, forces air and water into cracks, weakening the base; therefore the stack collapses sooner, rather than forming ridges caused by differential erosion rates higher up.

• Which outcome occurs when increased glacial meltwater feeds into stream networks on permafrost landscapes?
• Which outcome occurs when increased atmospheric CO₂ concentration enhances rainfall acidity?
• Which outcome relating to tectonic activity follows increased stream sediment load from eroding mountains bordering subduction zones?
• Which phenomenon weakens the North Atlantic Current when Arctic sea ice melt intensifies?
• Which outcome occurs when pyroclastic flow loses momentum?
• Which outcome results where isostatic depression exceeds sediment infill in fjords?