The phrase that describes how metamorphic rocks form is "form from existing rocks." Metamorphic rocks are created through the alteration of existing rocks (either igneous, sedimentary, or other metamorphic rocks) under heat, pressure, and/or chemically active fluids, without the rocks melting.
Which phrase describes how metamorphic rocks form?
form from melting
form at Earth’s surface
form from sediments
form from existing rocks
1 answer