Ecosystems is an excellent resource for understanding what an ecosystem is and goes on to explain the types of ecosystems, known as biomes. Check out the wonderful panoramic photographs of different biomes.

Lists sixteen biosphere reserves in Canada that have been designated as such by the United Nations Educational, Scientific and Cultural Organization. Each ecosystem is described, along with ecological and socio-economic characteristics...

Students examine the biology topic of ecology. The tutorial includes definitions, questions, and pictures on rock cycles.

Learn about the Biosphere 2 project and the history of Biospherics.

This comprehensive page discusses the Asteroid Impact vs. Volcano-Greenhouse dinosaur extinction debate. It was written by paleontologist, professor, and scientist Dr. Dewey McLean.

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...