The plants found in a bog located on the west side of the Rose Lake marsh in Clinton County, Michigan are changing over time. What is causing this change? Is there a human-related problem that needs to be addressed? In this problem, the challenge to students is to help find factors that have caused the changes at the Rose Lake marsh, and predict what we can expect to happen to the bog ecosystem over time. A materials list, teacher background information, safety practices, references, assessment, and outcomes are provided. This book selection includes the Table of Contents, Preface, Catalog of Problems, Acknowledgments, About the Authors, References, and Index.