A hierarchy is a system that organizes people or things into different levels of importance or authority. In a workplace, for example, there may be a clear structure where managers oversee employees, and executives lead the managers. This arrangement helps define roles and responsibilities, making it easier to manage tasks and communication. Hierarchies can also be found in nature, such as in animal groups. In a pride of lions, there is often a dominant male that leads the group, while other members have specific roles. This structure helps maintain order and ensures that resources are shared effectively among the group.