Cellular respiration is an example of when a minimum amount of energy is needed for a chemical reaction to begin. * 2 points
Atomic Theory
Conservation of Mass
Activation energy
Covalent Bond

Cuz i said so. which gives it to b

It might. it might because if you think about if they discovered if we came from (lets say something funny like aliens) and thy found cells that matched and they would have t do more research about it but would most probably change their theory.