After heavy rainfall, which risk increases as dissolution widens limestone fissures?

💡 Explanation

Increased sinkhole formation and ground subsidence occurs because enhanced dissolution widens the fissures via chemical weathering, weakening the overlying rock; therefore, collapse becomes more likely, rather than increased stability due to infilling.

• Which mechanism causes 'staircase' valley features when glacial cirques truncate a pre-existing stream valley?
• Which mechanism causes localized crustal thinning at continent-continent convergent boundaries after initial collision?
• Which mechanism primarily drives the localized uplift of land preceding volcanic activity?
• Which outcome results when regional wind erosion concentrates abrasive particles?
• What eruptive outcome is most likely when highly viscous lava encounters groundwater?
• Which long-term outcome primarily results from isostatic rebound post-deglaciation on coastal islands?