Which two factors are necessary to form metamorphic rock?Heat and cementationHeat and pressurePressure and sunlightSediments and pressure

All metamorphic rocks are created in the presence of high heat and high pressure.Group of answer choicesTrueFalse

how metamorphic rocks are formed?

Which of the following best explains how metamorphic rocks are formed?ARocks are changed by heat, with or without high pressure, deep inside the Earth.BWeathered rock is eroded, deposited, and cemented to form new rock.CMolten magma cools and hardens inside the Earth.DHot lava cools and hardens outside the Earth.

Igneous rocks form by which processesheat and pressuremelting and solidifcationcompaction and cementation

Which must be true for metamorphism to occur?A.The parent rock must be in liquid form.B.The grain size must become smaller.C.The process must take place underground.D.The parent rock must be igneous.