Here's why:
* Domain is the broadest and most inclusive category in the classification system. It encompasses all life forms, dividing them into three major groups: Bacteria, Archaea, and Eukarya.
* Kingdom comes next, grouping organisms within a domain based on shared characteristics. For example, the Eukarya domain includes kingdoms like Animalia, Plantae, and Fungi.
* Phylum, Class, Order, Family, Genus, and Species become progressively more specific, each level containing fewer organisms with more similarities.
Therefore, the domain level contains the greatest diversity of life, encompassing all the different types of organisms on Earth.
