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← GeographyWhich outcome occurs when excessive rainfall intensifies leaching in tropical soils above bauxite deposits?
A)Aluminum concentration enriches near the surface✓
B)Silica accumulation forms a hardpan layer
C)Iron oxides disperse into groundwater reserves
D)Organic material builds up, increasing fertility
💡 Explanation
Elevated leaching dissolves and removes silica and other soluble elements, leaving behind concentrated aluminum oxides near the surface because of eluviation; therefore, bauxite formation is enhanced, rather than inhibiting fertility, forming hardpan, or mobilizing iron.
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