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← GeographyWhich mechanism causes loess deposition next to glacial outwash?
A)Electrostatic dust particle attraction
B)Reduced flow competence after obstruction✓
C)Chemical precipitation downwind
D)Thermal convection current settling
💡 Explanation
Loess accumulates due to decreased wind velocity; deposition occurs because of reduced flow competence causes particles to settle near the obstruction. Therefore, option B is correct rather than electrostatic attraction, chemical precipitation, or thermal effects, which play minor deposition roles here.
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