• Continents grow when microcontinents, or small continents, collide with each other or with a larger continent.
  • Oceanic island arcs also collide with continents to make them grow.
  • Pangaea was the last supercontinent on Earth, but it was not the first.
  • Rodinia contained about 75% of the continental landmass that is present today.
  • The early Earth was an active place with abundant volcanic eruptions and earthquakes.
  • The remnants of these early rocks are now seen in the ancient cores of the continents.
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