H. G. Wells: “History is a race between education and catastrophe”.

domingo, 21 de octubre de 2012

1º CC.SS. - TEMA 2 - Continental drift

Continental drift is the movement of the Earth's continents relative to each other by appearing to drift across the ocean bed. The hypothesis that the continents had once formed a single landmass before breaking apart and drifting to their present locations was first presented by Alfred Wegener in 1912.