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← GeographyWhich mechanism primarily drives speleogenesis at phreatic cave levels?
A)Mixing corrosion due to groundwater flows✓
B)Abrasion via suspended sediment transport
C)Evaporation-driven mineral precipitation
D)Thermally induced hydrostatic pressure fracturing
💡 Explanation
Mixing corrosion occurs because varying groundwater compositions mix, altering saturation states; therefore, increased dissolution happens at the mixing interfaces within phreatic zones, rather than abrasion or other factors predominantly influencing other cave processes.
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