Which of the following would not be considered a classification for landforms

Idk what country are we talking about?

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 (d) the greenhouse effect is primarily caused by car and trucks;