K karen New member Nov 1, 2010 #1 1.which theory states that earth crust and rigid upper mantle move in different directions and at different rates over earths surface? 2.tectonics plates interact at places called plate? 3.places where tectonic plates move apart are called?
1.which theory states that earth crust and rigid upper mantle move in different directions and at different rates over earths surface? 2.tectonics plates interact at places called plate? 3.places where tectonic plates move apart are called?
