1. The Structural Parts of the Earth
... of years, which still changes the outward appearance of the earth. When you look at the map of the world, you see how well the east coast of North and South America fits into the west coast of Europe and Africa. Over millions of years these continents have slowly drifted apart. Where plates pull apart, hot molten rock emerges as lava and ... bends beneath the other, it is called subduction. Most of the time this happens because a dense oceanic plate collides with a lighter continental plate. You can see this along the Pacific coast of South-America. The oceanic plate dips beneath into t...
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