Systematics is a branch of biology that focuses on the classification, organization, and study of the diversity of organisms. It involves the identification, naming, and categorization of species, as well as the investigation of their evolutionary relationships and patterns of diversity. Systematics uses various methods and techniques, such as molecular analysis, morphological traits, and ecological characteristics, to determine the evolutionary history and relationships between different organisms. The ultimate goal of systematics is to create a comprehensive and accurate understanding of the evolutionary relationships between all living organisms.