south America is located entirely within which hemisphere? A. Northern Hemisphere B. Southern Hemisphere C. Western Hemisphere D. Eastern Hemisphere

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

i didn’t understand your question but archipelagos are groups of island hope this