Which of the following situations is descriptive of the existence of a negative externality. vernon studies for his biology test late into the night and oversleeps the next morning, thus missing the test. nancy is in the library looking for a book. she is talking to herself and consequently disturbs a few people in the library. bob learns later that he could have purchased a pair of shoes for less than he paid. jackie has had the flu and has stayed in bed for a week. none of the above

I think it is Nancy is in the library looking for a book. She is talking to herself and consequently disturbs a few people in the library.

Explanation:

There are good externalities and bad externalities in economics. A good externality is when for example a farm of flowers is situated next to a producer of honey. The farmer benefits from the polinization of his flowers and the honey producer from the pollen and nectar that bees take from the flowers to produce honey. A negative externality is something like in the case mentioned of Nancy who reads aloud and disturbs other people in the library and doesn't let them read peacefully.

the part of the earth that is best reflected on a map is the surface. maps reflect borders of countries or territories as well as physical features like mountains.

explanation:

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.