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← GeographyWhich outcome occurs when exposed phyllosilicate-rich shales experience increased oxidation?
A)Enhanced weathering-driven mass wasting✓
B)Increased silicate mineral availability
C)Decreased soil cation exchange capacity
D)Accelerated chemical sedimentary rock formation
💡 Explanation
Enhanced mass wasting occurs because oxidation promotes volume increase and weakening through spheroidal weathering, which reduces shear strength; therefore, landslides result, rather than increased mineral availability, as weathering fragments existing structures.
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