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← GeographyWhich consequence results when overwash deposition exceeds barrier island vegetation stabilization?
A)Landward barrier island migration occurs✓
B)Estuarine upwelling zones develop rapidly
C)Spit platforms experience catastrophic collapse
D)Tombolos experience swift channel widening
💡 Explanation
Landward barrier island migration occurs because increased overwash allows sediment to breach the island at a rate faster than plant bioherms can offer stability, because of sediment transport. Therefore, the island moves rather than remaining in situ or eroding evenly, and creates new environments.
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