Which outcome results when a prolonged regional drought intensifies?

💡 Explanation

More drought leads to increased soil tension and reduced support for cave roofs, a process called mechanical weathering; because dissolution weakens the rock and drought removes moisture, leading to ceiling collapses; therefore the collapse risk increases locally, rather than wide-spread glacier or volcano impact.

• Which hydrologic outcome is accelerated when increased glacial ablation exceeds stream incision?
• Which outcome lowers levee crest elevations during floods?
• Which outcome is caused by sediment deposition in slow-moving fluvial systems?
• Which outcome occurs when pressurized groundwater flows through fractured limestone?
• Which consequence results when eustatic sea level rises rapidly behind a coastal barrier island system?
• Which mechanism promotes increased discharge in alluvial river systems?