The two (2) major rivers where the largest linguistic family evolved and the regions it spread throughout time

This country likely has a high total fertility rate (tfr).

Ithink the answer to that would be b):

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