CK-12 Foundation
CK-12 Earth Science Concepts for Middle School
Explore a variety of science concepts in an interactive textbook created for middle school scholars. A lengthy table of contents takes readers to pages comprised of a subject overview, outline, and summary. Follow links further to find...
Khan Academy
Khan Academy: Evidence for Evolution
Explore the evidence for evolution: anatomy, molecular biology, biogeography, fossils, & direct observation.
Other
The Evidence for Evolution
These pages are part of a site called "Evolution," that accompanies a textbook by the same name. Mark Ridley is the author, and in this section he discusses the evidence for evolution.
Estrella Mountain Community College
Maricopa Community College: Nonvascular Plants and Nonseed Vascular Plants
Very detailed outline describing several aspects of plant diversity, including vascular vs. nonvascular, evolutionary adaptations, homosporous and heterosporous life cycles, and specific information on some ancient species (Lycophytes,...
John Wiley & Sons
Wiley: Earth Through Time: Life of the Paleozoic: Phylum Chordata
Learn about the evolution of life in the Paleozoic Era based on fossil evidence of the five classes of fishes. Read about the role these chordates played in the evolution of tetrapods.