Which terms best represents the way igneous rocks are formed? A.) cooling and solidifying B.) heating and drying C.) changing and pressuring D.) cementing and layering E.) Melting and rising

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products