Avolcanic island arc forms when a. oceanic lithosphere subducts beneath continental lithosphere b. oceanic lithosphere subducts beneath another oceanic lithospheric plate c. continental lithosphere subducts beneath oceanic lithosphere d. two plates of continental lithosphere collide

He got it right defiantly right

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

Answer metamorphic rock;