Ethos: appeal to credibility
For example someone including a specialist or professional's opinion on a product.
Ex: #1 Doctor Recommended
Ex: Selena Gomez's Favorite Shampoo
Well although the two are very close in comparison, an autobiography is a book that the author writes about their whole lives and themselves while a memoir is only part of the author's life that he writes about. Hope that helps!
Because it’s good and easy to cook