Other
Open2.net: Ecosphere
Designed by the Open University and the BBC, this website from Open2.net explores ecosystems. Included is a lengthy discussion on closed ecosystems and their importance to research, as well as a virtual ecosystem, an interactive showcase...
PBS
Nh Pbs: Nature Works: Ecosystems
How would you define an ecosystem? Check out this educational resource to learn more about the living and nonliving parts of different ecosystems.