According to the plate tectonic theory, the continents were once together forming a giant continent called the pangea. The continents then drifted apart forming the continents as we see now. In thi... | more...

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Channels: Others Geophysics

Tags: earth

Upload by: second on 16-10-2010.

Duration: 10m 2s

Dnatube: Sciencific and Medical video site.