This site about food poisoning discusses Staphylococcus Aureus - what it is, where the common sources of "staph" are, common symptoms, and what can be done to prevent contamination and infection.

Read about the different predators, consumers, and producers that make up an ocean food chain.

Explains the characteristics of food chains and food web; the different levels of producers, consumers, and decomposers; and the differences between food chains and food webs. Includes charts and a Venn diagram comparing the two.

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

This activity is designed to accompany an interactive on the Annenberg Learner website. Students investigate the changes that take place in an ecosystem when they alter the organisms in a food web. As they work with the simulation, they...