Hierarchy is a system that organizes people or things in a ranked order, often based on levels of authority or importance. For example, in a company, the CEO is at the top, followed by managers, and then employees. This structure helps everyone understand their roles and responsibilities, making it easier to work together. In nature, hierarchy can also be seen in animal groups. For instance, in a pack of wolves, there is a clear ranking, with an alpha wolf leading the group. This hierarchy helps maintain order and ensures that the pack functions effectively, as each member knows their place and duties.