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===Meaning===
The theory of Plate Tectonics states that the Earth's surface is divided into a series of plates. These plates are constantly shifting, some plates are moving together, others a part and some parallel to one another. The boundaries of these plates see features such as trenches, ocean ridges, mountain belts and are where most earthquakes occur.
The theory of Plate Tectonics states that the Earth's surface is divided into a series of plates. These plates are constantly shifting, some plates are moving together, others a part and some parallel to one another. The boundaries of these plates see features such as trenches, ocean ridges, mountain belts and are where most earthquakes occur.