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The earth crust is made up of blocks called plates or tectonic plates.
The plates float on the molten mantle.
The plates move away from each other causing magma to fill the spaces between them.
Some plates may move towards each destroying the materials between them; while others may move past each other restoring the material between them.
When the plates melt there is subduction where sediments on the sea floor are compressed to form Fold Mountains.
When the continental plates meet they are also compressed into Fold Mountain.
Dana05 answered the question on August 16, 2019 at 13:14
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