Answer:
Metamorphic rocks were once igneous or sedimentary rocks, but have been changed (metamorphosed) as a result of intense heat and/or pressure within the Earth's crust. They are crystalline and often have a “squashed” (foliated or banded) texture.
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The answer is C because slow moving water does not have enough energy to create erosion. But fast moving water does have the amount of energy needed to create erosion
