Match the correct term with the columns of the geologic time scale 1. period 2. era 3. epoch 4. eon a. ? d. ? b. ? c. ?

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

Answergoogle earth; i believe this is the correct answer, plz check first;