Assess undergraduate understanding of eutrophication in freshwater lakes, including primary causes (external and internal nutrient loading), core biogeochemical processes (N and P cycling, phytoplankton dynamics, oxygen depletion, internal loading and sediment interactions), common indicators (chlorophyll a, Secchi depth, dissolved oxygen, nutrient ratios), ecological impacts (loss of biodiversity, harmful algal blooms, fish kills, altered food webs), and interpretation of monitoring data and basic management implications.