Assess students' ability to analyze causes and consequences of eutrophication in freshwater lakes by identifying point and nonpoint nutrient sources (nitrogen, phosphorus), tracing effects on primary producers, food webs and dissolved oxygen dynamics (e.g., algal blooms, hypoxia, fish kills), interpreting simple data or graphs from lake monitoring, and evaluating mitigation strategies (buffer strips, nutrient management, constructed wetlands, aeration) including effectiveness and trade-offs; scenario-based questions and short-constructed responses appropriate for Grades 6–8.