[Assess understanding of how wetlands improve water quality and reduce flood risk by examining ecological mechanisms (sediment trapping, plant uptake, microbial nutrient transformation, and filtration), hydrological functions (storage, groundwater recharge, peak-flow attenuation), and human influences (drainage, pollution, land-use change, and restoration/management). Students should identify key processes, analyze case scenarios, and evaluate benefits, trade-offs, and policy or restoration options.]