Why is the classification species not considered a group?

A. Each species shares characteristics with other species
B. Each species is a separate type of organism
C. Each species lacks the characteristics of levels above
D. Each species is an individual organism

B. Each species is a separate type of organism

The classification of species is not considered a group because each species is a distinct and unique type of organism, separate from other species. A group usually refers to a collection of individuals that share common characteristics and are categorized together based on those similarities. In contrast, species represent individual organisms that do not necessarily share all characteristics with other species.