Curated OER
Chapter One: The Importance of Soil
The grammar is problematic on several of the slides in this collection, but the information is generally accurate. If you don't mind making a some corrections rather than starting from scratch, this presentation will save you some...
Curated OER
Nutrient Cycling
AP environmental science or college-level ecology classes will glean a tremendous amount of information on nutrient cycles from this detailed PowerPoint. It covers nutrient requirements, biogeochemcial cycles, decomposition rates, and...
Curated OER
Sunken Millions
This PowerPoint provides a game show format with multiple choice questions about fresh and salt water. Topics include sources of water, water geography, uses of water, and the water cycle.