Which is the best definition of activation energy?
the energy required to end a chemical reaction
the energy required to bind a substratewo an active site
the energy required to form or break the bonds of reactant molecules
the energy required to re-form bonds in product molecules

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.