The next series of questions presumes that you have at least once visited and have some knowledge of the fast-food restaurant McDonald's. Use your knowledge of McDonald's and your understanding of community ecology to answer the following questions about an ecological community, McDonaldland.
-Which of the following would be considered a keystone species in McDonaldland?
A) Big Mac
B) Large French Fries
C) Premium Caesar Salad with Crispy Chicken
D) Filet-O-Fish
E) Chicken McNuggets

Question

Quizplus · Accepted Answer

A keystone species is one that has a disproportionately large effect on its environment relative to its abundance. In the context of McDonaldland, the Big Mac could be considered a keystone species because it is iconic to the McDonald's brand and significantly influences the "ecosystem" of the menu and customer choices, much like a keystone species influences the structure and diversity of ecological communities.

The Next Series of Questions Presumes That You Have at Least