Metamorphic Metamorphic rock used to be igneous or sedimentary rock that was changed by heat or pressure or both.
(Metamorphic Metamorphic rock; to be; igneous or sedimentary rock that was changed by heat or pressure or both) (igneous or sedimentary rock; was changed; by heat or pressure or both)
Metamorphic Metamorphic rock igneous or sedimentary rock
to be was changed
igneous or sedimentary rock that was changed by heat or pressure or both
by heat or pressure or both