____ rocks are formed when other rocks undergo tremendous amounts of ____ and pressure. It takes ____ of years for a sedimentary or ____ rock to ‘____’ into a metamorphic rock Sedimentary and igneous rocks undergo the morphing process deep in the Earth or near ____ underground. We often find metamorphic rocks in ____ where high pressure has squeezed the rocks together and piled them up to form ranges such as the Himalayas, ____, and the Rocky Mountains

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