Will mark as
which of the following processes formed the andes mountains.
a. glaciers deposited sediment.
b. plates converged together to form the mountains.
c. plates pulled apart and released magma.
d. sand dunes hardened and became rock.

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