How fast does a continent move each year

The moving of continents is called continental drift. The average speed of the movement of these continents are 2.5 inches per year. Examples would be the North American and Eurasian tectonic plates which are separated by the Mid-Atlantic Ridge. The two continents are moving away from each other at the rate of about 2.5 centimeters (1 inch) per year. 

Answer:   [b]:   "cultural" .

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