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← GeographyWhich mechanism dictates soil-horizon development during glacial retreat?
A)Chronosequence governs primary pedogenesis stages✓
B)Cryoturbation homogenizes soil profile layers
C)Kettle formation generates wetlands locally
D)Esker deposition creates drainage pathways
💡 Explanation
Successive colonization drives horizon formation during retreat because chronosequence describes temporal stages of pedogenesis; therefore, a gradient along deglaciated terrain reflects soil age, rather than cryoturbation induced mixing, kettle wetland ponding, or esker stream formation.
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