University of Michigan
University of Michigan: Global Change: The Flow of Energy: Higher Trophic Levels
This lesson addresses the following questions: What is the efficiency with which energy is converted from trophic level to trophic level? What are the differences between assimilation efficiency, net production efficiency, and ecological...
National Geographic
National Geographic: Marine Ecosystems and Biodiversity
In this unit students explore major marine ecosystems by locating them on maps. Students use marine examples to learn about energy transfer through food chains and food webs and then they discuss how food webs can illustrate the health...