PBS
Pbs: Journey to Planet Earth: Hot Zones
This online companion to the PBS series "Journey to Planet Earth: Hot Zones" explores how changes in ecosystems can lead to increased risk and transmission of infectious diseases. Highlights include video clips and educational resources.
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....