Ohio State University
Ohio State University: Concepts of Plant Ecology
An advanced discussion of plant interactions and relationships. Energy flow, nutrient cycling and succession are discussed. Try the quiz to check your understanding.
Utah Education Network
Uen: Biological Energy Food Chain Practice
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.