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.

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.

After reviewing the roles of consumers, producers and decomposers, you'll create your own food chains using pictures from magazines. The site also has 18 questions to see if you can identify the ecologic role played by various organisms.