To study the diversity of life, biologists use a classification system to name organisms & group them in a logical manner. In ______________________ _________________________ each species is given a two-part scientific name. Linnaeus’s system of classification uses _______________ taxonomic categories. They are – from smallest to largest - ___________________, _________________, ________________________, ______________, _________________, ________________________, ______________. Since then, an extra taxon has been added, called a ________________.