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← GeographyWhich outcome results when excessive tephra accumulates quickly?
A)Crop destruction via increased soil acidity✓
B)Accelerated glacial calving from thermal flux
C)Enhanced thermohaline circulation upwelling rates
D)Increased crustal density shifts isostatically
💡 Explanation
Crop failure is likely because high tephra accumulation introduces acid precursor compounds; the acid rain mechanism lowers soil pH, therefore, it destroys crops, rather than affects glaciers, ocean currents or crustal density isostatically.
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