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← GeographyWhich outcome results when rising continental temperatures destabilize permafrost barriers?
A)Increased methane release into atmosphere✓
B)Reduced thermohaline ocean circulation strength
C)Decreased coastal erosion from storm surges
D)Expanded artic ice albedo coverage
💡 Explanation
Thawing permafrost allows microbial decomposition of organic matter, resulting in positive feedback. More methane is released because the biochemical transformation mechanism accelerates, therefore amplifying warming, rather than slowing it like decreased circulation.
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