***** NOT A TEACHER *****
Since you say that you have already submitted your assignment and you have already received an unchangeable mark,
I think that I am permitted to comment on it.
I think that you did a great job. May I, however, suggest a few changes?
What comes to mind when you hear the word "fairness"? The racism during World War II and the cruelty shown to the Jewish people? Or why your mother gets a lower salary than your teacher, even though she works as hard as him? [For perfect English, it should be "as hard as he." I do not know how strict a grammarian your teacher is.] Or whether animal research is right? Fairness is nothing but a concept that arises from humans viewing the world as a perfect place, which it can never be.
NOTE: A few people still believe that "She works as hard as he" is the English mandated by the rules. Most people today do not follow this rule.