How does sedimentary rock become metamorphic rock?

Sedimentary rock becomes metamorphic rock through the addition of heat and/or pressure. Contact metamorphic rocks are those primarily transformed by close proximity to an intrusion of magma, where a recrystallization or elemental transfer can take place. Sedimentary rocks like shale can metamorphose into slate mainly through pressure and heat derived from plate collision, where the alignment of minerals is changed resulting in a foliated texture.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.