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← GeographyWhich mechanism accelerates formation of karst topography where limestone underlays boreal forests?
A)Chelation by organic acids✓
B)Frost shattering expansion cycle
C)Salt crystal weathering pressures
D)Oxidation rates of iron compounds
💡 Explanation
Organic acids from decaying matter in boreal forests enhance limestone dissolution via chelation, a form of chemical weathering. Higher acidity increases erosion rates, therefore more karst features develop, rather than from physical frost action alone, or other weathering forms.
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