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Unformatted text preview: uplifted into mountains, then eroded and weathered, and debris modified, transformed, or reformed into rock underground. The cycle is completed when the rocks are thrust up into mountains again. The tectonic cycle explains where igneous rock comes from and how new crust is formed and recycled by large scale motions of Earths surface and interior. The sun provides the energy that powers the hydrologic cycle. Heat from the Earths interior powers the tectonic cycle, and the rock cycle draws energy from both sources. Each system is depended on by people, hydrosphere is water, atmosphere is protection, biosphere helps the growth of life, and the lithosphere is the foundation of the Earth....
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This note was uploaded on 10/23/2011 for the course SCI 245 245 taught by Professor Hallin during the Spring '11 term at University of Phoenix.
- Spring '11