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Originally posted by LocoHombre
ok, to start it off: What are plate tectonics????
plate tectonics is the the thery that the Earth's crust, the solid part of the surface, is broken into pieces that "float" on top of a weak, putty-like layer of the mantle called the asthenosphere (as-TEN-oh-sfeer), meaning "weak sphere."
[edit on 16-4-2010 by LocoHombre]