This collection of images of six different creatures, including insects and carnivorous vertebrates, illustrates the wide range of mouth types that exist within the animal kingdom. It also discusses the environment and its impact on the...

An online course with interactive activities and learning exercises give students the opportunity to look at the tree of life and to determine how and why scientists believe each domain, species, and everything in between have such...

This site is a description of the history behind the 5 Kingdom system suggested by Robert Whittaker. An extensive list of resources is included.

What is it that distinguishes a living organism from a nonliving object? This collection of images presents examples that aren't as clear-cut as one might think, enticing students to question the meaning of life.

The Linnaean system (1758) classified all macroscopic living organisms as either Animals or Plants, based on whether they moved [anima, with a soul] or not. Thus, Fungi were included as plants. With the invention of the microscope and...

Learn how all living things are classified.

The cognitive domain Evaluating focuses on skills necessary to judge the value of ideas, techniques, products, or solutions. Students must evaluate the credibility or functionality of given content with clearly defined criteria and...

A useful chart that explains the processes involved in transforming parent rocks into metamorphic rocks. Shows the two categories of metamorphic rocks produced, one by regional metamorphism and the other by contact metamorphism; their...