Writing Assignment

What is an autobiography? What is a self-portrait?  How are an autobiography and a self-portrait the same?  How are they different?
        An autobiography is a history or documentation of a person's life, written or told by that person. A self portrait is a portrait of yourself, done by yourself, used to describe your life or hobbies.
        An autobiography and self portait are the same, because they are both describing yourself, and they are both visual forms of learning. They are different because autobiographies are written and self portraits are simply a picture.