Acatalyst increases the rate of a reaction by a. providing an alternative reaction pathway with lower enthalpy change. b. lowering the potential energy of the reactants in the reaction. c. providing an alternative reaction pathway with lower activation energy. d. lowering the potential energy of the products in the reaction.

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic