Design a World Studies EE with real interdisciplinary integration

A student wants a World Studies EE about "measuring nitrate changes in a school wetland after heavy rain" using water-test records, rainfall data, and site photos. Choose the route that connects global issue, DP disciplines, local case, and integration. Select the World Studies issue, disciplines, local case, and integration move. Then answer this in your own words: why would this route keep the EE research process focused and authentic? AI will analyse your reasoning, evidence, research judgement, documentation, reflection quality, and expression.