Kingdom – A biological classification below the domain grouping all forms of life with similar fundamental characteristics.Phylum – A classification level beneath kingdom that groups organisms with similar body structures.Class – Below phylum, grouping organisms with more specific shared traits.Order – Below class, organizes organisms into related families.Family – Consists of several related genera.Genus – Consists of related species sharing close similarities.Species – The most specific level, a group of individuals that can interbreed naturally.