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← GeographyWhich process accelerates ventifact erosion on exposed desert bedrock?
A)Abrasion by wind-borne sand grains✓
B)Chemical weathering via hydration cycles
C)Freeze-thaw fracturing amplifies deflation
D)Vegetation root wedging in fractures
💡 Explanation
Ventifact formation accelerates due to wind abrasion, where constant sand particle bombardment mechanically erodes exposed surfaces; the resulting etching carves distinct shapes, because kinetic energy transfer causes micro-fractures, therefore faster erosion occurs, rather than the slower action of chemical or biological means.
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