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← GeographyWhich risk significantly increases downwind subsequent to sustained tephra deposition?
A)Glacial outburst flood frequency increases
B)Accelerated soil stratum formation occurs
C)Vegetation biome thermal profile shifts
D)Increased risk of lahar formation✓
💡 Explanation
Sustained tephra deposition increases the likelihood of lahars because the tephra mixes with water from rainfall or melting snow and ice, creating a dense, fast-moving mudflow; therefore, lahar risk escalates rather than accelerated soil formation.
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