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Exploring Rocks and Minerals
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El Ciclo de la Roca
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Guess My Age! Relative Dating...
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The Earth Looks Different:...
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The Ground Is Shaking! What...
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Earth's Rock Cycle
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Minerals
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Kaboom! What Happens When...
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Gems, Crystals, and Precious...
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How Old is Planet Earth?...
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World's Greatest Natural...
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Janice VanCleave's Crazy,...
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Hills vs. Mountains: Knowing...
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Rocks and Gems
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What Are Igneous Rocks?
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Flat at the Top: Unique...
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From the Deepest Trenches to...
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Why Can't I Feel the Earth...
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Weathering and Erosion
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What Makes a Rock Valuable?:...
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Geology
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Unearthing Metamorphic Rocks
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Las Rocas, Los Minerales y El...
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