(environment, metamorphic, sedimentary, rocks, metamorphism, stress, igneous, temperature, pressure)
Metamorphic rocks are (1)____ that result from the alteration of preexisting rocks in response to changing environmental conditions, such as variations in (2)____, (3)_____, and mechanical (4)_____ and the addition or subtraction of chemical components. The preexisting rocks may be (5)____ (6)_____, or other (7)_____ The word (8)_____ is taken from the Greek for "change of fom metamorphic rocks are derived from igneous or sedimentary rocks that have altered these form (recrystallized) as a result of changes in their physical (9)_____​