Do you want to teach your middle school students about Ecosystem Populations? These middle school science lesson plans were made for the MS-LS2-4 Ecosystems: Interactions, Energy, and Dynamics NGSS. Lesson 1: Wetlands: Biological and Physical ComponentsLesson 2: Beavers' role in the WetlandsLesson 3: Invasive Species in the WetlandsLesson 4: Changes in the Physical Components in WetlandsLesson 5: Using Other Sources to Obtain EvidenceLesson 6: Writing a Claim*Having access to YouTube w