Table of Contents:

1. PD Video - LS2A Interdependent Relationships in Ecosystems

2. PD Video - LS2B Cycles of Matter and Energy Transfer in Ecosystems

3. PD Video - LS2C Ecosystem Dynamics, Functioning and Resilience

4. Presentation - Energy Flow Through an Ecosystem (HS-LS1-5, HS-LS2-5)

5. Video - Photosynthesis (HS-LS1-5)

6. Video - Photosynthesis and Respiration (HS-LS1-5, HS-LS2-7)

7. Activity - Photosynthesis, Respiration, and the Carbon Cycle (HS-LS2-1)

8. Activity - Creating Chains and Webs to Model Ecological Relationships (HS-LS2-1, HS-LS2-2, HS-LS2-4, HS-LS2-6)

9. Activity - Constructing Sonoran Desert Food Chains and Food Webs (HS-LS2-4)

10. Video - Feedback Loops: How Nature Gets Its Rhythms (HS-LS1-3, HS-LS2-6)

11. Interactive - Exploring Trophic Cascades (HS-LS2-6, HS-LS2-8)

12. Lesson Plan - Wolves of Yellowstone (HS-LS2-6, HS-LS2-7, HS-LS4-5)

13. Worksheet - Wolves of Yellowstone (HS-LS2-6, HS-LS2-7, HS-LS4-5)

14. Lesson Plan - Food, the Carbon Cycle, and Global Warming (HS-LS2-5, HS-LS2-7)