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← GeographyWhich increased risk occurs when fjord sediment destabilizes?
A)Submarine landslide triggering a tsunami✓
B)Increased methane release into atmosphere
C)Enhanced coastal bioerosion from currents
D)Saltwater intrusion affecting coastal aquifers
💡 Explanation
A sudden destabilization leads to increased risk of submarine landslides and thereby the possible occurrence of devastating tsunamis; this occurs through sediment consolidation and slope angle increase, because the fjord walls are very steep. Therefore, a slide could trigger a wave, rather than methane release.
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