Which mechanical effect generates desert ventifacts over time?

💡 Explanation

Ventifacts form because abrasion occurs as wind accelerates sand grains that strike rock surfaces, therefore shaping them selectively. Raindrop dissolution and root wedging act far more gradually to alter surface rock formations, rather than cause the effects of ventifact creation.

• Which climatic effect weakens near South America during El Niño?
• Which outcome occurs when acidic rainwater saturates basalt?
• Which risk increases when excessive sedimentation loads fluvial depositional fans?
• Water density differences due to glacial melt in a fjord can drive which mixing-related oceanic effect?
• Which risk increases when a large earthquake causes liquefaction in loosely packed, water-saturated soil?
• Which landform develops when freeze-thaw cycles and permafrost cause creeping downslope movement of saturated soil?