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← GeographyUpon cliff retreat along coastlines, which geologic formations most likely experience increased mechanical weathering?
A)Isolated sea stacks and arches✓
B)Deep ocean trenches near shore
C)Newly formed coastal plains
D)Submerged hydrothermal vent systems
💡 Explanation
As cliffs erode via hydraulic action, undercutting leads to increased instability and collapse involving exposed sea stacks; physical disintegration accelerates, rather than formations further offshore or inland, because pressure releases within weakened rock structures induce exfoliation.
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