This is a PowerPoint that explains freshwater. It includes information about watersheds, wetlands,river systems, lakes and ponds,and groundwater. Great video clips are embedded and pictures are used to show examples. This is a great PowerPoint to help explain the topic and help students understand. "CFU's" or "Checks For Understanding" are used on most slides to make sure students understand as you are working through the presentation.
Be sure to look at my Interactive/Cloze/Fill-in-the-Blank notes packet that goes along with this PowerPoint. It will help students interactively follow along with this PowerPoint slide by slide.