Earth: The 3rd Rock
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The Earth's HistoryHuman beings have used Earth’s resources since prehistoric times. We made tools from stones. We mined raw materials to refi ne and manufacture into tools, utensils, shelters, ovens, and other useful items. We fi gured out how to extract precious metals from ores. We captured the energy of fl owing streams behind dams and found numerous ways to put this power to use. We diverted water into channels for irrigation. And because it is human nature to try to explain everyday phenomena, we made up stories to explain how Earth was created.
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