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lanet Earth is an amazing machine, and we—and our future—are riding on it. This video introduces students to the Earth system’s primary interacting subsystems (the biosphere, geosphere, hydrosphere, and atmosphere); the nitrogen, carbon, and water cycles; and three surface processes: weathering, mass-wasting, and erosion. The greenhouse effect, the impact of acid rain on the environment, and diminishing freshwater resources around the world are considered as well. A viewable/printable instructor’s guide is available online.
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