Nhich statement defines activation energy?
o it is the sum of the maximum energy and reactant energy.
it is the sum of the product energy and reactant energy.
o it is the difference between reactant energy and maximum energy.
it is the difference between product energy and reactant energy.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?