Final answer:
Classification in biology is the process of grouping organisms based on their characteristics. The Linnaean system is a widely used classification system that divides organisms into specific categories.
Step-by-step explanation:
In biology, classification is the process of grouping organisms into categories based on their characteristics. The most widely used classification system in biology is the Linnaean system, which uses a hierarchical model. The Linnaean system divides organisms into domains, kingdoms, phyla, classes, orders, families, genera, and species, with each category becoming more specific. For example, humans belong to the domain Eukarya, the kingdom Animalia, the phylum Chordata, the class Mammalia, the order Primates, the family Hominidae, the genus Homo, and the species Homo sapiens.