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2
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The third nearest planet to the sun.
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5
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The hot liquid part of the core.
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9
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Organic Matter deposited by water, air or ice.
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13
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Wearing of the earth by wind, ice and water.
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14
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A topic in science where it focuses on the earth's structure and substance and it's history.
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16
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The gases surrounding the earth, consisting of oxygen, nitrogen and carbon dioxide.
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17
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The solid part of the earth composed of the crust and upper part of the mantle
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18
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It can be reformed by either sedimentary or igneous rocks.
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19
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The thin outer layer of the earth.
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20
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This type of rock often contains fossils.
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21
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The star which the earth orbits around.
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22
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It is the build up sediments.
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23
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Various processes that causes an exposed rock to decompose.
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26
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To maintain something in its original or existing state.
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27
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A substance that is formed naturally in the earth. They can often be found in metamorphic rocks.
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28
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When particles are closely compacted or crowded.
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