Hierarchy is a system of organization where people or things are ranked one above the other based on levels of authority, importance, or status. In a workplace, for example, a manager oversees employees, creating a structure that helps in decision-making and task delegation. In nature, hierarchy can be seen in animal groups, such as a wolf pack, where there is a clear leader, often called an alpha, followed by other members in a specific order. This structure helps maintain order and ensures that roles are understood within the group.