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The process is; heat, and pressure.
erosion/weathering
weathering, erosion, and compaction.
Subduction and high pressure.
Rocks change through the processes that take place within the rock cycle.
The process is; heat, and pressure.
Heat and pressure cause granite to change to gneiss.
The process that must occur to change any rock to igneous rock is melting.
The process of sedimentary rocks altering to metamorphic rocks is called metamorphosis.
The rock cycle is the process through which rocks change from one type to another. This process includes melting, metamorphism, uplift, weathering, and burial. Metamorphism is specifically the change of pre-existing rock into new rock through pressure and temperature.
yes
erosion/weathering
Heat and pressure
Weathering, erosion, deposition, compaction, and cementation.
Melting.
no
Under influence of pressure and temperature, a rock can change, the process is called deformation or metamorphism, the result is a metamorphic rock. This can happen to igneous rocks as well.