He Murray is in eastern Australia. River Plateau Plain Mesa

I'm pretty sure it's c. extremely gradual but not 100% sure though.

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

It just all depends on where you live at the moment

According to new research, more than 5..5 million deaths are associated with polluted air. hope this : ).