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← GeographyWhich risk substantially increases around composite volcanoes during periods of heightened lava effusion?
A)Formation of lahars increases rapidly downstream✓
B)Glacial ablation rates accelerate drastically nearby
C)Oxidation of metal deposits yields acidity
D)Atmospheric ozone depletion increases sharply above
💡 Explanation
The risk of lahars increases due to lava melting snow/ice, creating unstable flows, this is called volcanic debris flow. Lahar generation dominates during lava effusion events, rather than acceleration of ablation, metal enrichment, stratospheric changes, because of rapid thermal imbalances.
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