Which risk increases significantly when intense rainfall saturates loess deposits?

💡 Explanation

Earthflows become dangerous because saturation reduces internal friction increasing shear stress, causing slope failure, a process labelled liquefaction; therefore, widespread and catastrophic earthflow events are likely rather than slower sediment deposition on river beds.

• When significant water table drawdown intercepts solution caves in karst regions, which outcome is expected?
• Which outcome predominantly dictates annual global heat circulation?
• Which hazard increases where tectonic uplift causes braided stream deposition into large alluvial fans?
• Which process accelerates cave formation when groundwater acidity increases?
• Which effect increases when humid air flows poleward?
• Which outcome commonly arises when human infrastructure disrupts longshore sediment transport?