Variation in temperature, pressure, and/or the chemistry of the rock can cause chemical and/or physical changes in igneous and sedimentary rocks to form metamorphic rocks.
(Variation in temperature, pressure, and/or the chemistry of the rock; can cause; chemical and/or physical changes in igneous and sedimentary rocks)
Variation in temperature, pressure, and/or the chemistry of the rock
can cause
chemical and/or physical changes in igneous and sedimentary rocks