Which risk increases when anoxic conditions spread to fjord sediments?

💡 Explanation

Methane gas accumulates in the fjord sediments because anaerobic decomposition occurs under anoxic conditions; therefore, expanding anoxia increases methane release rather than any change to fault lubrication and tectonic uplift, which are unrelated.

• Which consequence results when excessive irrigation accelerates subsurface dissolution?
• Which outcome accelerates sea stack erosion when differential weathering concentrates stress?
• Which consequence results when groundwater lowers in wetlands?
• Which outcome occurs when increased aridity reduces dust deposition vegetation?
• Which outcome of glacial rebound causes crustal earthquakes?
• Reduced river sediment load increases which effect via karst?