This site explains how to use evidence from fossils to understand the ecology of ancient organisms. Fossils provide clues and together abiotic and biotic factors combine to form complete ecosystems, each with its own unique ecology and history. Predator and prey relationships and dispersal are used as examples to show how fossils can also tell us about biotic factors, such as what organisms are present ... Full description.

This activity will help students understand food chains and food webs in the ocean. After studying the materials provided, students will play a food web game, in which they are given a blank food web and the names of the organisms. Students place the organisms in their correct places on the food web so that the arrows indicate the direction of energy flow. As a follow-up, students decide what would ... Full description.