Sophia Learning
Sophia: Environmental Concepts
This lesson will discuss the key concepts related to the human relationship with the environment.
CK-12 Foundation
Ck 12: Life Science: Ecosystems
[Free Registration/Login may be required to access all resource tools.] Ecology is the study of ecosystems. That is, ecology is the study of how living organisms interact with each other and with the nonliving part of their environment....
Other
S Cool: Engery Flow and Nutrient Cycle
This website describes trophic levels, transfer of energy between trophic levels, pyramids of ecology, and nutrient cycles within the environment.
Curated OER
Resettlement
CNN reports in 1999 on China's biggest construction project since the Great Wall, the ecologically controversial building of the Three Gorges Dam on the Yangzi River.