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← GeographyOn coastlines with varied rock resistance, which mechanism explains sea stack formation?
A)Differential erosion decreases structural stability✓
B)Isostatic rebound raises uniform strata
C)Lithospheric flexure forms linear ridges
D)Hydraulic fracturing creates resistant arches
💡 Explanation
Differential erosion attacks less resistant rock, leaving isolated stacks; it initiates structural collapse because weakened portions succumb to wave action. This leads to stack formation rather than uniform uplift, which lacks the selective removal driving the landform's isolated nature; therefore, differential bedrock resistance causes the outcome.
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