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12 March, 09:53

Over the last 250 million years, the world changed from a single land mass to a number of different continents. One reason for the change is expanding ocean floors. What causes ocean floors to expand?

A) convergent plates

B) divergent plates

C) slab pull

D) uplift

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Answers (1)
  1. 12 March, 10:14
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    A is your answer, convergent plates cause them to expand.
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