Which are the two agents that are necessary in the formation of metamorphic rocks? erosion and heat heat and lava lava and pressure pressure and heat

The category is the thing that is most simmilar throughout a period

A  reaction  in which  energy  is  released  to the surroundings is called an exothermic  reaction. in this type of  reaction  the enthalpy, or stored  chemical energy, is lower for the products than the reactants. when ammonium nitrate is dissolved in water,  energyis  absorbed  and the water cools.