What can fossils reveal about earth past?

Fossils show how organisms have changed over time.
Fossils also show us how Earth itself has changed. e.g. Similar fossils have been found on both sides of the Atlantic Ocean. Many of the organisms that left these fossils could not have crossed an ocean. The finding of these fossils in distant places supports the theory of CONTINENTAL DRIFT. This is the theory that the continents have been slowly drifting apart for millions of years.

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