1 At-home system: The Medical Alert will work in all 50 states, as well as Canada, Puerto Rico and the Virgin Islands, as long as a compatible phone line is present. 2  Mobile Alert system: As long as adequate AT&T cell phone coverage is available.  Alert 911 system: As long as any adequate cell phone coverage is available.
Taxonomy (general), the practice and science of classification of things or concepts, including the principles that underlie such classification. Folk taxonomy, the way people describe and organize their natural surroundings. Folksonomy, classification based on user's tags.
Classification of Living Things & Naming[edit] In science, the practice of classifying organisms is called taxonomy (Taxis means arrangement and nomos means method). The modern taxonomic system was developed by the Swedish botanist Carolus (Carl) Linneaeus (1707-1788).