How is plate tectonics done?:
hive-184127·@andriabella·
0.000 HBDHow is plate tectonics done?:
"The heat in the mantle causes movements of matter, what we call convection currents," explains David Bercovici. The hot material rises to the surface where it cools down and then descends. " Where it occurs, the downward motion in the mantle stretches the rock from the lithosphere. 
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