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The highland of South America consists of the Andes mountains.
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The science that deals with the earth's physical structure and substance, its history, and the processes that act on it.
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Most economically viable hydrocarbon deposits percolate UP from deeper source rocks. (Exceptions being tar sands, shale oil, etc.) The key factor in whether oil or gas is produced is the pressure, heat, and also dwell time of the organic matter in the source rock.
Canada and Greenland are run by prime ministers!
