Food Webs

 Interesting Facts about Food Chains & Food Webs - http://www.arcytech.org/java/population/facts_foodchain.html
Contains a description of food chains, food webs, and ecological pyramids.

Food Chains and Webs - http://www.vtaide.com/png/foodchains.htm
Explores food chains and food web and even includes an interact area where you create possible food webs.