You already have the vocabulary booklet for this unit which contains lots of useful vocab to help you write your essay. If you have lost your copy, you can download a copy that I uploaded on the blog on January 30th (see further down this page).
I am attaching additional help for your essay to this post. There is a help sheet to give you some advice to structure your essay, and some additional vocab that is not on the vocab sheets, but may be especially useful for those of you who would like to explore the topic in more detail and those who are aiming for a credit grade.
All of this is for guidance only. You are free to structure your essay as you wish. It is your piece of work.