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← GeographyWhich outcome occurs when increased freeze-thaw frequency acts on basalt?
A)Accelerated physical rock fragmentation✓
B)Enhanced chemical silicate dissolution
C)Reduced soil horizon development
D)Decreased biological soil mixing
💡 Explanation
Increased freeze-thaw causes accelerated 'frost wedging', a type of physical weathering, because water expands upon freezing and exerts pressure. Therefore, physical fragmentation increases rather than enhanced dissolution because the mechanical stress exceeds rock strength.
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