Scientific classification, also known as taxonomy, is a system used by scientists to organize and categorize living organisms. This system groups organisms based on shared characteristics, making it easier to study and understand the diversity of life. The main levels of classification include domain, kingdom, phylum, class, order, family, genus, and species. Each organism is given a unique two-part name called a binomial nomenclature, which includes its genus and species. For example, humans are classified as Homo sapiens. This structured approach helps scientists communicate about different species and track their relationships and evolutionary history.