16. As a pre-assessment, have students create a diagram that shows their own ecosystem. Have students show the living and non-living parts of their ecosystem and how they depend on one another.
20. What makes up a balanced or healthy ecosystem? How are the parts of an ecosystem interdependent? What can happen if an ecosystem becomes unbalanced? How does energy flow through an ecosystem?
31. Have students create a diagram that shows their own ecosystem. Have students show the living and non-living parts of their ecosystem and how they depend on one another.