The application of binomial nomenclature is now governed by various internationally agreed codes of rules, of which the two most important are the International Code of Zoological Nomenclature (ICZN) for animals and the International Code of Nomenclature for algae, fungi, and plants (ICN) for plants.uch a name is called a binomial name (which may be shortened to just binomial), a binomen or a scientific name; more informally it is also called a Latin name. The first part of the name identifies the genus to which the species belongs; the second part identifies the species within the genus.
While 90 percent of the world's informal settlements are in developing nations -- such as India and Brazil -- they are a worldwide phenomenon and are in European capital and largest American cities. Here are the five largest slums in the world:
Settlements can range in size from a small village with a few hundred residents to a metropolitan city of over one million people. Geographers often study the reasons behind why such cities develop where they do and what factors lead to their becoming a large city over time or remaining as a small village.