metamorphic rocks: are formed when igneous or sedimentary rocks are subjected to extreme heat and pressure, causing them to bend, fold, squeeze and literally, "change" shape and composition.
(metamorphic rocks; are formed; T:when igneous or sedimentary rocks are subjected to extreme heat and pressure; causing them to bend, fold, squeeze and literally, "change" shape and composition) (them; to squeeze; ) (igneous or sedimentary rocks; are subjected; to extreme heat and pressure) (them; to fold; )
metamorphic rocks them igneous or sedimentary rocks them
are formed to squeeze are subjected to fold
T:when igneous or sedimentary rocks are subjected to extreme heat and pressure causing them to bend, fold, squeeze and literally, "change" shape and composition
to extreme heat and pressure