This lesson focuses on the organization of an ecosystem. The feeding relationships between organisms in an ecosystem can be seen in food chains. Sampling allows us to measure the abundance and distribution of these species. It provides...

[Free Registration/Login may be required to access all resource tools.] Describes how energy is transferred from one organism to another.

A module that explains what an ecosystem is and how energy and matter move through them. Students will look at the different roles of plants and animals and at ecological relationships in food chains and food webs.

Students learn about Abiotic and Biotic Factors and how they affect the ecosystem in which an animal might live in.

During this instructional activity, students will visit Internet sites to research facts about owls and food chains. They will use this information to complete a picture of an owl food chain, dissect owl pellets, and write a class book...

A lesson that helps students understand food chains and food webs. With the background information, interactive activity, and extensions, students will see the interconnectedness and interdependence of organisms. Activity has students...

Understand that an ecosystem such as the Kalahari has a system of checks and balances to ensure that no species overpopulates and threatens the survival of other species. Chart a food chain and explore the balance between predator and prey.

[Free Registration/Login may be required to access all resource tools.] Describes how food chains represent feeding relationships.

Starts with living and non living and works through producers, consumers, food chains and food webs.

Learn about ecosystems, how they work, codependency, and food chains.

The difference between food chains and food webs is explained.