Step-by-step, arrow-by-arrow, viewers are walked through the rock cycle. In the end, you have a simple, yet complete diagram of the process. Pictures appear to show samples of igneous, sedimentary, and metamorphic rocks. The presentation...

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...

Not going into depth on any one topic, this Earth science presentation skims the crust. It touches on the materials that construct the crust and then moves into plate tectonics. This is a useful and colorful note-taking guide for your...