Classification schemes are made by mankind, particularly by scientists. There is no natural reason that a domain is the highest level of life classification. The human reason is that we chose it to be. Why did we choose to name this level "domain". I can not give you a physical or scientific explanation for why your parents named you the way they did. In a similar manner I cannot give you a physical or scientific mechanism for how we arbitrarily name the levels of a given classification scheme
Kingdom.
organism → population → community → ecosystem → biome
Domain (it says in my Biology book)
genome -> chromosome -> DNA -> gene
life domain phylum
domain: broadest category used to classify life forms
Yes, domain is the broadest classification level in taxonomy. It separates organisms into three main categories: Bacteria, Archaea, and Eukarya.
Domain is the broadest taxonomic group.
I think this would be superkingdom (which also has other names). This is broader than the kingdoms (plants, animals, protists, archaeobacteria, eubacteria, and I don't remember the other(s)). DOMAIN DOMAIN
The Domain is the broadest group.
In taxonomy, a domain is the highest taxonomic rank of organisms, representing the broadest category. There are three domains in the classification system: Bacteria, Archaea, and Eukarya. These domains are based on differences in cell structure and organization.
Domain.
The domain.
Domain.
Kingdom is the broadest category; species is the most specific.
The broadest taxonomic division is domain. There are three main domains: Bacteria, Archaea, and Eukarya. These domains encompass all forms of life on Earth.
Domain