Open Curriculum
Open Curriculum: Multicellular Life
To describe the diversity of unicellular organisms which arose over 2 billion years of evolution.
PBS
Nova: Matching Aliens With Impacts
One of the major causes of species extinction is the introduction of alien species. Information about ten different invasive species is presented. Find out how well you know the information by matching alien species with the effects...
University of California
Ucmp: Introduction to Trilobita
One of the most famous fossil organisms, trilobites were once a complex group. Learn to tell them apart in this illustrated article that tells how they lived, their body structure, there place in evolution, and the like.
Other
International Rhino Foundation
Learn all about the black, white, Indian, Javan and Sumatran rhinos. Great links and information on rhinos. This organization works to save the rhinoceros from extinction. Much of their work centers on efforts to combat poaching.