... the expectation of HS-LS2-6 when they make sense of how the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, while changing conditions may result in new ecosystems. This long-term scientific investigation also provides students...

... ). Figure 7. Understanding salt pollution and groundwater. Figure 7. Understanding salt pollution and groundwater. Once students have investigated groundwater and salt accumulation in groundwater, they use an aerial photo from the watershed they studied (from Google Earth) along with an aerial...