What is the correct order of taxa from largest to smallest?

The correct order of taxa, from the largest grouping of organisms to the smallest, is as follows:

1. Domain
2. Kingdom
3. Phylum
4. Class
5. Order
6. Family
7. Genus
8. Species

To elaborate, the hierarchy starts with the Domain, which encompasses the broadest categories of life forms, including Bacteria, Archaea, and Eukarya. Following this, Kingdoms split organisms into large groups, such as Animalia and Plantae. Phyla further categorize organisms based on structural similarities, and Classes refine them into more specific categories. Orders group similar families, while Families gather related species. The Genus groups closely related species, and finally, the Species is the most specialized unit, representing individual organisms that can interbreed. This taxonomic hierarchy helps in organizing and classifying the vast diversity of life on Earth.