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← GeographyWhich long-term consequence arises when intense subsurface irrigation causes increased leaching?
A)Formation of expansive saline crusts✓
B)Increased rates of soil cryoturbation
C)Accelerated formation of laterite soils
D)Decreased cation exchange capacity (CEC)
💡 Explanation
Salinization arises due to capillary action drawing water to the surface, because evaporation leaves dissolved salts behind; therefore a saline crust appears, rather than changes in CEC or other soil processes since salt accumulation dominates.
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