Which feedback process amplifies cirque erosion at equilibrium line?

💡 Explanation

Enhanced freeze-thaw weathering through positive nivation feedback increases erosion at the equilibrium line forming a cirque, because freeze-thaw cycles mechanically disintegrate rock. Therefore, larger cirques develop, rather than weathering alone modifying existing rock.

• Which environmental shift results from prolonged effusive lava flows?
• Which effect results when acid rock drainage reduces amphibian activity in wetlands?
• Which factor inhibits stalactite formation despite water saturation?
• Which landscape response occurs when fractured limestone bedrock experiences enhanced groundwater infiltration?
• On valley flanks in mountainous areas, which erosional outcome results from intense freeze-thaw cycles?
• Which consequence results when groundwater lowers in wetlands?