It’s been estimated that in all of Earth’s history, there have been 7 supercontinents, with the most recent one being Pangaea.
The next supercontinent (Pangaea Ultima) is expected to form in around 250 million years.
Why is this the case? What phenomenon causes these giant landmasses to coalesce, break apart, then coalesce again?
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Throw a bunch of toy boats into a bathtub that’s constantly being slowly agitated. They’ll randomly group up and separate over and over.
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