Explore this interactive exhibition featuring 30 of the world's most interesting but unfortunately endangered species. The exhibition provides useful research information and a video on each endangered animal.

Through an interactive learning module, students investigate the importance of species richness and biological diversity.

The concept of competitive exclusion, explained here, states that two species cannot co-exist when needing the same, limited resources to survive. The different types are described and examples are provided.

Dive in and explore what makes this beautiful world so fragile. In this Web feature, from the PBS series "Evolution," discover how coevolution has shaped the ecological relationships among reef creatures.

This is a collection of courses on communities and ecosystems. Some topics explored are productivity, food webs, and ecology. The courses offer video clips, lecture notes, practice problems, and exam questions. Practice problems and exam...

Learn how mutualism benefits the organisms in a symbiotic relationship and what the different types of mutualism are. Provides lots of examples.

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about the evolution of agriculture and how it has impacted human population growth. Includes a few questions to check for understanding.

Describes the role of mutualism in an ecosystem and the different types, and provides examples.

A look at what fossil evidence reveals about the life and ecological interactions of this extinct species of a clam.

Discuss how individual organisms and groups of organisms interact with each other, and research and classify symbiotic relationships between individual organisms of different species.

An ecosystem is composed of biotic factors of a community of living organisms interacting with one another which we can see in food chains/webs. These diverse organisms stay together because of the need of food. Population is referred to...