Pond Boss Forums INTRO Questions & Observations Weekend observation

So, in 1930 (just guessing) an introductory biology textbook used a general example where roughly 90% of energy is lost as you move up each trophic level (e.g., phytoplankton to zooplankton to fathead minnow to largemouth bass) in a "pyramid of energy" and a "pyramid of biomass." how many of you remember that? That general example has probably been repeated in almost every introductory biology class since then. :-) Good teaching example for a general principle, but not so good at explaining individual situations. Couldn't resist! :-)