When the German scientist Alfred Wegener suggested in 1912 that the continents move, most geologists rejected the idea. He h noticed th the coa of So America a Africa f together li pieces o a puz, and th similar fossils were found on both sides of the ocean. However, he could not explain what force was strong enough to move whole continents. Only in the 1960s did new evidence from the ocean floor convince scientists that he had been largely right.

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