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1
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Isolated mountain of volcanic origin featuring a pointed summit.
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2
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A long high sea wave caused by an earthquake, or other natural disturbance.
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3
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A collective term for the bast landmasses and their submerged margins.
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4
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Major area in the basin of the Pacific Oceans where a large number of earthquakes & volcanic eruptions occur.
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5
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A very large expanse of sea.
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6
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Average water level observed during a given duration (day, month, year)
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7
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String of volcanic islands formed when two tectonic plats meet.
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8
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Underwater extension of the continent.
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9
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The study of Earth's physical structure and substance.
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10
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Ancient volcano who's summit has been cut off by erosion and then submerged.
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12
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Molten rock and gas under very high pressure that can reach extremely high temperatures.
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16
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Rounded underwater rise of low elevation.
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