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

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.

Explains what a primary consumer's role in a food chain is and provides examples.

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

Explains the characteristics of tropical and temperate rainforests and what rainforest food webs look like.

Students learn about energy and nutrient flow in various biosphere climates and environments. They learn about herbivores, carnivores, omnivores, food chains and food webs, seeing the interdependence between producers, consumers and...

Explains what is meant by a tertiary consumer in a food chain and provides examples.

See how combining yeast, sugar, and water can demonstrate the carbon cycle and show how microorganisms work in the food chain.

How are animals and plants linked? What is the difference between a producer and consumer? How is a predator different from prey? Take this food chain quiz to find out the answers to these questions and more. Links allow you to convert...

The difference between food chains and food webs is explained.

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

Students explore the biosphere's environments and ecosystems, learning along the way about the plants, animals, resources and natural cycles of our planet. Over the course of lessons 2-6, students use their growing understanding of...

Describes five different types of decomposers that feed on decaying organic matter in the oceans and that are at the bottom of the ocean food chain.

This colorful site examines the food chain and delves into an explanation of what producers are and where they fit in an overall ecosystem.

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

A complete lesson on owl pellets. Students can read information, watch a tutorial, and use their computer mouse to complete a dissection simulation right there on the screen.

Travel with your students on a Virtual Field Trip to learn about Temperate Forest Biomes. You will also discover many informative and interactive websites.

In this tutorial, Bill Nye explains how to catch planeria, small carnivorous worms that live in ponds. In addition, he explains their role in the environment.

This resource provides information about ecology.

Join Ellen on her trip to the Kaap De Goede Hoop in South Africa, and learn more about plants, animals, and energy.

In this activity, students will learn how changes in nature can be beneficial or harmful to animals. At the end, students will be able to conclude information according to the evidence collected.

A colorful tutorial about ecological pyramids. Read the information, and then check your understanding with some questions and answers about the topic.

Read and fill in the blanks of this passage explaining who eats what. Each blank has a dropdown menu with choices. When you finish, click CHECK MY ANSWERS. If you pick a wrong answer, the right answer will be displayed along with your...