Students comprehend how tides can impact shoreline plant communities through the study of a freshwater tidal marsh. They use actual tidal data to show that tidal ranges differ among geographic locations, even those relatively close...

Learn about the intertidal ecosystem. Find out about plants, animals, adaptations, and conservation efforts.

A complete site that examines the geology of a lake, anatomy of a lake, seasons of a lake, and the life span of a lake.