Official languages of the United Nations just one official language, French. IFAD has four official languages: Arabic, English, French, and Spanish. The next largest international grouping after the UN is the Commonwealth of Nations which is exclusively English speaking. All other international bodies in commerce, transport and sport have tended to the adoption of one or a few languages as the means of communication. This is usually English, closely followed by French (see: list of international organisations which have French as an official language). Regional groups have adopted what is common to other elements of their ethnic or religious background. Standard Arabic is usually adopted across
Ecoregions of Zambia artificial reservoir), together with the smaller lakes such as Mweru Wantipa and Itezhi-Tezhi reservoir, and numerous lagoons and swamps cover about 5% of Zambia. Together with their associated rivers, the WWF categorises these freshwater bioregions in Zambia: Zambezi Basin made up of (not shown on the map): Ecoregions of Zambia The biomes and ecoregions in the ecology of Zambia are described, listed and mapped here, following the World Wildlife Fund's Global 200 classification scheme for terrestrial ecoregions, and the WWF freshwater bioregion classification for rivers, lakes and wetlands. Zambia is in the Afrotropic biogeographic realm (or ecozone) of the scheme.