Why does a rock become a metamorphic rock? A}because of magma hardening under the surface
B]because of great heat and pressure
C]because of time and compaction
D]because of lava hardening on the surface

Temperature is defined as a. the equivalent of heat. b. a measure of the average kinetic energy of the individual atoms or molecules composing a substance. c. how hot or cold it is. d. the total kinetic energy of the atoms or molecules composing a substance. e. none of the above is correct.