First Review of Trophic Levels, Food Chains and Food Webs

First Review of Ecological Pyramids (Pyramids of Numbers & Energy Pyramids)

First Review of the Ecological Niche

Second Review of Energy in the Ecosystem

IB Ecology Unit Objectives

Communities & Competition: Chapter 24

Cycles & Food Chains/ Webs: Chapter 25

Problems in our Biosphere: Chapter 27

If short on time, skim the chapters & concentrate on the "Summary of concepts" and "Discussing key terms" sections at the end of each chapter.