Part A How are metamorphic rocks formed? How are metamorphic rocks formed? Preexisting sediment is altered through heat and pres
sure. Preexisting sediment is altered through melting and pressure. Preexisting rock is altered through heat and pressure. Preexisting rock is altered through melting and pressure.
Answer: Metamorphic rocks are formed from pre-existing rocks altered through heat and pressure.
Explanation: Metamorphic rocks are rocks produced when either igneous rocks or sedimentary rocks are been altered through the action of heat and pressure to produce a rock that have metamorphosize.
hand a rock to another person and do that in a line what makes it effecent is the fact that one person doesn't have to bring the rocks back and forth on there own
