During the formation of metamorphic rocks, what is one event that leads to increased heat? a Sun warms rocks.
b Magma pockets rise.
c Friction occurs between sliding rocks.
d Lava at Earth’s surface flows over rocks.

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.