In what parts of the world do each of the world's major religions predominate?

Maybe a horizontal because its a pattern

So  if  the sum of the enthalpies of the reactants is greater than the products, the  reaction  will be  exothermic.  if  the products side has a larger enthalpy, the  reaction  is  endothermic. you may wonder why  endothermic reactions, which soak up energy or enthalpy from the environment, even happen

Why you put last one a? i think is b.