The Four Earth Systems

This lesson introduces the viewer to the Four Earth Systems: Atmosphere, Lithosphere, Hydrosphere, and Biosphere.

The lesson explains how each system is made up of sub-components and how each system interacts with the other three systems--all supporting life on Earth.

The Carbon Cycle and Water Cycle are described and the Life Cycle is introduced.

This lesson is designed to satisfy elements of the Texas Education Knowledge Standards for the World Geography studies course.