Question 2 of 20 A region based on common properties such as population is called a(n).
A. perceptual region
B. formal region
C. physical region
D. functional region

Magma is outside the volcano  and lava is inside the volcano. 

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

Can you show the map?