What does the symbol ∆h stand for? the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction one calorie given off by a reaction

Asap! will give brainiest when a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. what needs to be done to meet this increased demand? raising the control rodslowering the control rodsremoving the control rods