>Gestures rely on the use of one's bod to communicate with others.
>People in every part of the world use gestures.
>A gesture's meaning may change completely from one culture to another.
Dr. Loomis' introductory sociology class is composed entirely of first-year students who are 18 years old. Together, these 55 students, and all other 18-year-olds, comrise an ___ _______?