Science
Scientists figure out what happens to Earth’s disappearing crust – Livescience.com
Modern plate tectonics may have only got going in the past billion years.
Like a giant broken-up cookie whose pieces float atop a sea of scalding milk, Earth’s outer shell is made of (less-tasty) rocky rafts that constantly bump into and dive beneath each other in a process called plate tectonics.
So what happens to those hunks…
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