One definition of Externalities reads as follows.

"In economics, anexternalityor external cost is an indirect cost or benefit to an uninvolved third party that arises as an effect of another party's activity."-Wikipedia contributors. (2022, November 18). Externality. In Wikipedia, The Free Encyclopedia.

List some of the externalities associated with driving a car, smoking cigarettes, or drinking alcohol. For example, a passenger vehicle emits about 4.6 metric tons of carbon dioxide annually