This food web demonstrates the interconnection between living things in a complex ecosystem.

This detailed food web depicts a more complex flow of energy in a forest ecosystem.

This simple food web depicts the flow of energy in a forest ecosystem.

In this lesson, students will research matter cycles in various ecosystems. They will develop a model that will show the movement of matter among plants, animals, decomposers, and the environment. Students will choose between a variety of ways to create their model.  (Preview Image: “Food web nemo”, CC-BY-SA 4.0, from Wikimedia Commons)