Which risk increases when thawing permafrost destabilizes coastal cliffs near settlements?

💡 Explanation

When thawing permafrost destabilizes coastal cliffs, soil cohesion is weakened due to melting ice because the permafrost acts as the 'glue', triggering increased coastal erosion and landslides. Therefore soil collapse increases, rather than reduced river discharge, decreased methane release, or enhanced sequestration which involves different arctic ecosystem processes.

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