Earth Systems and Resources
Plate Tectonics
2 best study notes in Plate Tectonics


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Environmental Science - Earth and Space: Ch. 1- Introduction to ES
Slideshow about Ch. 1 of Earth and Space Science

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Environmental Science - Intro to ecology
These notes are the introduction of ecology. If you are just starting ecology, these notes are perfect for you! They have all the basic info you need to know, and some extra facts you might need.