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what is defined as : the constant slow movement of earth's plates b/c of convection currents?
when 2 plates collide -- what determines which one will be on top?
density --the less dense plate will go on top
what is more dense --oceanic or continental ?
oceanic ---has more mass in a given volume .... remember the oceans are lower than the continents ------so they must be more dense
the rate at which you fingernails grow ------ is equal to the rate of movement of the earths plates. true or false ??
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