The ways in which plants have adapted through evolution in order to survive in a desert environment are described in this article. Getting water and retaining water are key to their survival, including protecting themselves from animals...

In Mr. Coyne's discussion of natural selection, he also illustrates the idea of "adaptive behavior". In full detail, he describes the Asian Giant hornet and all of its physical attributes with which it brutally devours the introduced...

In this photograph from Oxford Scientific Films, a horned bee attempts to mate with an Ophrys orchid, which has evolved to resemble a female bee.

Instructional module focusing on why species change over time through behavioral and physical adaptations. Discusses how environmental mechanisms influence adaptive evolution. Site also includes an interactive practice quiz and links...

An online summary of the evolution of flowering plants at an advanced level. The text is supported by good illustrations and is followed by a quiz. This is a good review for exams.

After looking at examples of natural selection and doing a simulation activity, learners investigate further by playing a simulation game and analyzing the data they collect. They then examine evidence of natural selection for the...

The main concepts in Charles Darwin's theory of evolution are described, how natural selection works, and the ongoing criticism of evolution from Creationists.

Get an overview of the process of microevolution.

Instructional module focusing on the early work of Charles Darwin. Discusses Darwin's key role in supporting and describing the theory of evolution as driven by natural selection. Site also includes an interactive practice quiz and links...

Using diagrams and descriptive illustrations, this college-level biology reference book discusses the development of evolutionary theory.

Describes the seven characteristics that define life - cells, homeostasis, heredity, use of energy, reproduction, response to environmental stimuli, and evolution and adaptation.

This annotated slideshow adapted from KET's Electronic Field Trip to the Forest illustrates how blight decimated the American chestnut tree and the methods scientists use to identify and pollinate the remaining trees to create...

Learn about selective pressure and how genes are involved in adaptations by watching this video on pocket mice. The video focuses on the research of Dr. Michael Nachman, "whose work in the field and in the lab has quantified the...