The answer should be neutralization
I would say Frost Wedging because water must move, a physical act, and then in must freeze, also a physical act, and then the act of it freezing causes cracks known as frost wedging and that is definitely a physical act. Hope that helps!
Explanation:
It's 112-100÷100*100= so 112-100 it's 12÷100 its 0.12 and *100 it's 12%