Understand environments and how organisms adapt to their environment.

View examples and learn how animals impact the food chain.

Students learn about energy flow in food webs, including the roles of the sun, producers, consumers and decomposers in the energy cycle. They model a food web and create diagrams of food webs using their own drawings and/or images from...

Students learn about the feeding relationships in an estuary ecosystem with this interactive energy pyramid activity. A second activity involves research and a video clip to elaborate the learning.

Kids learn about the food chain and food web. How energy cycles and transfers through living organisms.

Explore the different ecological roles of organisms in the ecosystem, and find out how the energy flows through them.

This illustrated guide to food chains and ecological pyramids will help clarify how energy flows through an ecosystem.

Students will create a food chain model and use it to describe the movement of matter among plants, animals, decomposers, and the environment. Resources include a detailed lesson plan, student handouts, pictures of a completed chain,...

Given illustrations, students will analyze the flow of matter and energy in food chains, food webs, and ecological pyramids.

Learners will build a food web diagram and illustrate the movement of matter through a series of food chains. Resources include detailed plans, examples of student work, videos of the lesson in action, and sample food webs.

Students construct possible food webs for six different ecosystems as they learn about the roles of producers, consumers, herbivores, carnivores and decomposers.

Complete illustrated discussion of energy flow within ecosystems, including discussions of trophic levels, ecological pyramids, food chains and webs, biological magnification, and cycles.

Learners analyze food chains, webs, and pyramids to determine how energy flows and matter cycles through ecosystems.

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...

Discussion of what makes up a food chain and its significance. Includes some historical perspectives on developing the concept, and on how a pesticide called DDT affected food chains during the 1960's.

PBS site provides some basic information on the food chain.

In this lesson, students will choose an organism of their choice and research its life cycle, food chain, diet, and habitat, then predict how habitat change might affect the organisms living within it.

In this ecosystem consisting of hawks, snakes, rabbits and grass, the population of each species can be studied as part of a food chain. Disease can be introduced for any species, and the number of animals can be increased or decreased...

Describes how a food chain works in a desert and how the Mojave desert food chain works in particular.

Explains what a food web is, the complexity of one in a rainforest, and how energy flows through a food web.

Read to understand how energy and inorganic nutrients flow through a food chain in an ecosystem.

This is a teacher's guide to a lesson on ecosystems. The objective is for the students to set up their own ecosystem and define the roles of producers, consumers and scavengers.