Lesson 1 : This lesson describes the terrestrial carbon cycle and why it is important, including an explanation of the Greenhouse Effect.
Lesson 2 : It is important to understand how plants decompose and are constructed. This video lesson describes the anatomy of leaves and why this is important for understanding decomposition.
Lesson 3 : How does the process of decomposition work? This lesson describes how decomposition happens, and the role of microorganisms in this process.