A great deal of evidence confirms the theory that the continents of Earth, made mostly of relatively light granite, float in the slightly yielding mantle, like logs in a pond. For many years it had been noticed that if North and South America could be pushed toward western and southern Europe and western Africa, they would fit like pieces in a jigsaw puzzle. Today, there is little question?the continents have drifted widely and continue to do so.
In 10 million years, the world as we know it may be unrecognizable, with California drifting out to sea, Florida joining South America, and Africa moving farther away from Europe and Asia.
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