1.When the oceanic plate, which is more dense, slips under the less dense continental plate.
2.Convection currents in the magma under the tectonic plates.
3.-the geology of Africa and South America are similar.
-Continents look like they would fit together.
4.The land is very fertile.
5.Large crystals-rocks cool quickly. Small crystals-rocks cool slowly.
6.Iron-rich basalt lava is runnier and slightly safer.
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