These are some of the ways that the Earth cycles its materials, including plates (made of rock)and water. Explain your ideas about why humans need to recycle.

Brand c i think that should be it

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