Metamorphic rocks are formed when igneous or sedimentary rocks change because of high pressure and heat.
(Metamorphic rocks; are formed; T:when igneous or sedimentary rocks change because of high pressure and heat) (igneous or sedimentary rocks; change; because of high pressure and heat)
Metamorphic rocks igneous or sedimentary rocks
are formed change
T:when igneous or sedimentary rocks change because of high pressure and heat
because of high pressure and heat