Information about amphibians, animals that can survive in a wide variety of habitats and cli-ates. The article discusses their behavior, diet, predators, conservation status, and evolution. (Published: August 29, 2008)

This site provides information about seahorses, including reproduction, behavior and ecology. Provides several links and an interactive menu.

A post-assessment at the end of a unit on global atmospheric change. Students write persuasive letters about an issue related to it, e.g., the greenhouse effect or ozone loss. The letters encourage the recipient to protect the atmosphere...

This provides access to a webbook about How Humans Evolved. The following topics are covered: (1) How Evolution Works, (2) Primate Behavior and Ecology, (3) The History of Human Lineage, and (4) Evolution and Modern Humans. Each chapter...