Who is the head of state in canada?

Answer primary waves;

This question has already been answered by someone else.here is a link.  hope that it .

Ithink the answer is ,temperature,pressure, and chemical changethey are identified by texture,streak,and locationthere are three ways that metamorphic rocks can form contact, regional,and dynamic metamorphism good luck, all this came right outta of the book

The answer would be a.