Which outcome occurs when floodplains experience prolonged anaerobic conditions?

💡 Explanation

Increased organic matter accumulation results because anaerobic conditions inhibit decomposition leading to higher organic matter; this slows the pedogenesis mechanism. Organic matter thus accumulates, therefore the correct answer is A, rather than options involving mineral transport under oxidized, aerated conditions.

• Which outcome results when increased wave refraction focuses energy onto pre-existing coastal sea stacks composed of weaker sedimentary rock?
• Which consequence results when rapid aggradation overwhelms river levees?
• Which mechanism causes the cooling effect in coastal upwelling zones when winds drive surface water offshore?
• Which mechanism causes increased surface water salinity within subtropical ocean gyres?
• Which erosional outcome dominates when persistent winds encounter unconsolidated alluvial plains?
• Which topographic outcome on a semi-arid plain results when strong winds preferentially erode fine sediments?