earth
Look at a map, and Africa and South America almost look like puzzle pieces that could fit together!
Long ago, scientists think all of Earth's continents were squished together into one giant supercontinent called Pangaea, before slowly drifting apart over millions of years to reach the positions we see on maps today.
The continents haven't always been separated like today, and they definitely weren't underwater the whole time either — land has existed above the oceans for an extremely long stretch of Earth's history.
That's exactly why Africa and South America look like matching puzzle pieces — they used to be joined together, and scientists even find matching rock layers and fossils on both continents' coastlines today!
earth
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