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.
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Explanation:
0
All the charges of the protons are cancelled out by all the charges on the electrons.
The mineral that is the hardest known substance in nature is a diamond.
Hope this helps.
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The answer is a. I learned that they can multiply by using your cells
