Explanation: Division is the organization structure used by the author in the section one to break down or divide the broad topic of 'Incredible Ocean's into the five major oceans. Remember the classification structure involves ranking, rating, or evaluating, but here, the author simply divides them into categories
Walter Cunningham's jaw muscle twitches because he is ashamed and self conscious about his low income. The teacher is new to Maycomb and is unaware of this economic difference that is present in Maycomb.