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3rd quarter vocab

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Across
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Organisms ended
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Crack in earth's crust
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Igneous and metamorphic rocks are created
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The scale in 1822 by Fedrick Mohs.
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A Valley that develops along a rift.
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Footprints, tracks or burrows.
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Age in years.
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Deep, elongated cavity bordering a continent or island.
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Formed when magma cools
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Geological process
Down
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Size and shapes of grains
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Mineral matter of variable composition
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Change
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Breaking down of rocks
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Substance occurring in nature
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Removal of soil, rock or material
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Formed only at high temperatures
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Categorizing rock into igneous or metamorphic or sedimentary.
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Natural features of landscape
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Mineral particle size