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← GeographyWhich hydrologic consequence accelerates when arctic seabeds thaw?
A)Submarine permafrost methane release✓
B)Increased freshwater coastal upwelling
C)Elevated deep-sea turbidity currents
D)Enhanced seafloor CO2 sequestration
💡 Explanation
Submarine permafrost degradation releases trapped methane because the process of gas hydrate dissociation is triggered by warming temperatures; therefore, methane release accelerates, rather than sequestering CO2 or upwelling alteration, which require different forcing factors.
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