1. MA 6.3 A food web identifies producers, consumers, and decomposers, and explains the transfer of energy through trophic levels. Relationships among organisms add to the complexity of biological communities. 13.6 PYRAMID MODEL

2. *two page notebook format* Do Now: 1) You know some energy from plants is lost when herbivores eat them. Where does the “lost” energy go? 2) Why is a vegeratian diet more “efficient” than a carnivorous diet? 3) What is a “specialist” p 385 and why are they vulnerable to environmental change? Tuesday, NOV 4, 2014 Topic: Ecology Objectives: Describe the way a pyramid model represents the flow of energy among trophic levels. Classify pyramid models that illustrate an ecosystem’s biomass and distribution of organisms. Page 31 Page 32

3. Sample pyramids CLASSIFY EACH AS AN ENERGY BIOMASS OR POPULATION PYRAMID

4. An energy pyramid shows the distribution of energy among trophic levels

7. Other pyramid models illustrate an ecosystem’s biomass and distribution of number of organisms

9. Analysis: HOW ARE EACH OF THE SAMPLE PYRAMIDS THE SAME? HOW ARE THEY DIFFERENT?

10. Formative Assessment 13.6 page 395, answer 1-5 Homework: Study Guide 13.6 Self-check