Crystallization above the ground and crystallization below the ground
Started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
Answer:
Protons, electron, and neutrons
Explanation:
It is about equal to the mass of the neutron. So, most people just say that they have the same mass.
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