How is a scientific name similar to an address that includes city and state?

The genus name is similar for all related species, like the state. And the city is more specific like the species name. For example, a black bear and a grizzly bear are the genus, but the species is only the grizzly bear. 

The infrared (ir) and the ultraviolet(uv) represent the two extremities of the visible spectrum (400-700nm). while ir represents electromagnetic radiation with wavelengths longer than those of visible light, uv represents wavelengths shorter than visible light

1.fossils 2.analogous organs 3.homologous organs