arthropod
Domain contains the fewest number of categories, with only three domains recognized in biological classification: Bacteria, Archaea, and Eukarya.
The order of the Monotremata contains the fewest species, with only five extant species. These species include the platypus and four species of echidnas.
Species within the class Cephalaspidomorphi, which includes the lampreys, comprise the smallest number of species among vertebrates, with around 38 recognized species.
The classification level with the fewest members is the domain level, which is the highest level in the biological classification system. It includes three domains: Bacteria, Archaea, and Eukarya.
The order of the Monotremata contains the fewest species, with only five extant species. These species include the platypus and four species of echidnas.
It goes: Domain, kingdom, phylum, class, order, family, genus, species; with domain with the most organisms, and species with the fewest. Therefore there are fewer organisms in a family.
population
Biosphere contains the fewest number of species compared to community and population.
Which contains the fewest data values
Species within the class Cephalaspidomorphi, which includes the lampreys, comprise the smallest number of species among vertebrates, with around 38 recognized species.
Anarctica
The exosphere.
troposhere
Population
Jupiter contains the fewest heavy elements. Unlike other planets, Jupiter is a gas planet, and contains mostly light elements.
Open Ocean