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← GeographyWhich pyroclastic phenomenon limits vegetation re-establishment following ignimbrite deposition?
A)Nutrient depletion from volcanic ash
B)Thermal alteration of soil horizons✓
C)Rapid oxidation of essential minerals
D)Increased susceptibility to surface erosion
💡 Explanation
Thermal alteration limits regrowth because ignimbrite's high temperature causes sterilization and vitrification, thereby hindering plant establishment; therefore, the alteration, rather than ash or oxidation, has a more prolonged impact.
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