Assess students' understanding of how land use (urban, agricultural, forestry), pollution sources (point and nonpoint), and conservation practices affect water quality and ecosystem health in a local watershed. Students should be able to identify common water quality indicators (pH, turbidity, dissolved oxygen, nutrients), explain how human activities change these indicators, interpret simple data or scenario-based results to predict ecological impacts on plants and animals, and propose practical management or restoration actions (e.g., riparian buffers, stormwater controls, reduced fertilizer use) to improve watershed health.