Worksheet for students to learn about ecosystems by analyzing a freshwater lake model, identifying components, and understanding food chains.

A worksheet titled "Research an Ecosystem" showing a cross-section of a freshwater lake ecosystem with labeled biotic and abiotic components, including organisms like fish, birds, and plants, and nonliving factors like sunlight and water. The worksheet includes sections for identifying the ecosystem, its location, abiotic and biotic factors, and food chains.