A Species is one of the fundamental units of biological classification and a taxonomic rank.
A species can be defined as a group of similar organisms that are capable of interbreeding and producing fertile offspring that resemble themselves.
The hierarchy of Biological Classifications, shown on the right, details some of the taxonomic ranks.
Also see:
Kingdom
Phylum
Class
Subclass
Order
Suborder
Family
Subfamily
Genus
Subspecies
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