INTRODUCTION TO LIMNOLOGY Lakes, Rivers, Wetlands, and Freshwater Ecosystems Reading Comprehension Passages. What secrets are hidden beneath the still surface of a lake, or the steady flow of a river? This lesson takes students into the science of limnology, where water becomes a storyteller of life, climate, and change. They’ll explore how freshwater systems shape ecosystems, store history, and sustain civilization, INTRODUCTION TO LIMNOLOGY Lakes, Rivers, Wetlands, and Freshwater Ecosystems a