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An interactive game that puts you in charge of carbon as you cycle through different earth features and organisms.
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Diagrams and an explanation of the carbon cycle, including how humans are impacting the balance.
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A look at carbon and its role in the environment and living things.
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Detailed concept map.
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NASA's explanation of the carbon cycle, including descriptions of missions to study the global cycle.
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A look at carbon and land use, missing carbon sinks, and how forests sequester carbon dioxide. Includes numerous graphs.
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NASA's visible earth project shows photosynthetic productivity for the earth in animated images of the earth.
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Why carbon is so important, how humans have interfered, and probable effects.
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Animations of how global warming occurs and how it is linked to the carbon and water cycles.
