Which outcome occurs when thermokarst thaw lakes expand?

💡 Explanation

Coastal erosion and methane release accelerate because thermokarst expansion activates positive feedback; the Abedo Effect melts the permafrost, the Methane gas escapes, therefore answer A, rather than carbon sequestration due to decomposition of organics in permafrost.

• Which phenomenon causes effusive volcanism at mid-ocean ridges when magma upwells?
• Which consequence frequently results when heavy tephra accumulates downwind?
• Which outcome occurs when cold fresh meltwater enters oceanic currents in polar regions?
• Which outcome do anisotropic winds and airborne abrasives create?
• Which risk increases when construction on permafrost causes thaw and subsequent subsidence?
• Along coastal deserts, which effect increases due to the Coriolis effect and prevailing winds?