Packed with visual aids and multiple learning opportunities, an engaging exercise challenges individuals as they explore the role of producers, consumers, and decomposers. After discussing differences between food chains, food...

From tiny organisms to entire biomes, young scientists examine the interdependent relationships tying all living and non-living things together with this collection of ecology resources.

Omnivores, herbivores and carnivores are waiting for you. The food chain comes to life at this friendly site.

A very informative site that discusses food chains and webs in detail. Not too complicated and fairly easy to understand, it also includes some pictures.

Ecosystems contain two kinds of commodities: matter (nutrients) and energy. Nutrients cycle through the ecosystem, available for repeated use by organisms. These cycles of use and reuse are called biogeochemical cycles. Energy instead is...

How would you define an ecosystem? Check out this educational resource to learn more about the living and nonliving parts of different ecosystems.

A brief look at what fossilized remains teach us about Ornitholestes, a carnivorous dinosaur "very closely related to the evolutionary line that produced the birds." Read facts about its size, anatomy, and diet, and view images showing...

Describes the characteristics of a tundra biome, how a tundra food chain compares to a tropical food chain, and what the different trophic levels look like.

Army ants live in Central and South America. They have a completely carnivorous diet. Learn more about the army ant in this well-constructed overview produced by the BBC. This resource includes a series of videos and images showcasing...