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Professor Dave Explains
The Wilson Cycle and Plate Boundaries
We just learned about plate tectonics, so let's see how that fits into a global-scale model for the formation and destruction of supercontinents called the Wilson Cycle. How do supercontinents like Pangea form and split up? It's an...
Khan Academy
Khan Academy: Rival and Excludable Goods
In this video [10:13] learn the difference between rivalry and excludability, and how these characteristics determine whether a good is a private good, public good, artificially scarce good, or common resource.