Which effect results when tundra thaws and bioturbation increases?

💡 Explanation

Increased bioturbation mixes thawed organic matter with oxygen; this accelerates microbial decomposition via oxidation because enzymes are more active at warmer temperatures. Therefore, permafrost carbon oxidizes at faster rates, rather than reduced rates, under drier freezing conditions.

• Which process amplifies ground shaking during earthquakes in areas with thick unconsolidated sediments?
• Which change increases the sinuosity of meandering streams?
• Which risk escalates when increased Arctic air temperatures degrade permafrost layers under a sloped landscape?
• Which volcanic phenomenon results following ice sheet removal?
• Which outcome occurs when differential pressure increases within rhyolitic lava domes?
• Which surface feature results when aeolian abrasion creates ventifacts?