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Continental Drift

From Biology-Online Dictionary | Biology-Online Dictionary
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The gradual movement and formation of continents (as described by plate tectonics).The moving of tectonic plates under the Earth's surface, which is constantly moving the land masses of the world away or closer to one another. It is believed continental Drift is responsible for the way in which related organisms are distributed today and can explain why geographical barriers (the splitting of land masses) created new species.