Metamorphism is most common along ____________________ plate ...

[sc00by25]

Metamorphism is most common along ___________________ _ plate boundaries. Fill in the blank(s) with the appropriate word(s).

Question 2

As the plate subducts until it begins to melt, it generates ___________________ _, which rises and
  causes ___________________ _ metamorphism. Fill in the blank(s) with the appropriate word(s).

[debra928]

Answer to Question 1

convergent

Answer to Question 2

magma, contact