Answer:
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Number one is "sand dunes".
Number two is "the breakdown of rock through mechanical disintegration and physical stress."
Metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock.
Answer:
In geology, the term sial refers to the composition of the upper layer of Earth's crust, namely rocks rich in aluminium silicate minerals. It is sometimes equated with the continental crust because it is absent in the wide oceanic basins, but 'sial' is a geochemical term rather than a plate tectonic term.
Explanation:
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