désertification
91Variation climatique — Changement climatique Pour le phénomène contemporain et anthropique, lire l article réchauffement climatique. Un changement climatique correspond à une modification durable (de la décennie au million d années) des paramètres statistiques… …
92climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …
93Mali — Malian, n., adj. /mah lee/, n. Republic of, a republic in W Africa: formerly a territory of France; gained independence 1960. 9,945,383; 463,500 sq. mi. (120,000 sq. km). Cap.: Bamako. Formerly, French Sudan. * * * Mali Introduction Mali… …
94Conférence mondiale sur la biodiversité de Nagoya (2010) — La Conférence des nations unies sur la diversité biologique (Nagoya, octobre 2010) était la COP10, c est à dire la dixième conférence des Parties de la Convention sur la Diversité Biologique des Nations unies (dite CDB, signée à Rio en Juin 1992… …
95Radiant Historia — Développeur Atlus Concepteur Mitsuru Hirata (producteur) Hiroshi Konishi (character designer) Satoshi Takayashiki (game designer) Yoko Shimomura (compositeur) Date de sortie …
96Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock …
97Gobi Desert — Gobi redirects here. For other uses, see Gobi (disambiguation). Gobi Desert (Говь) …
98Geography of Mauritania — Satellite image of Mauritania …
992005 in Africa — 2006 in Africa 2007 in AfricaInternational organisationsAfrican Union* The first summit of heads of state of the African Union s Peace and Security Council was held in Libreville (Gabon) on January 10 and January 11 2005. The summit focused on… …
100Aridity index — An aridity index (AI) is a numerical indicator of the degree of dryness of the climate at a given location. A number of aridity indices have been proposed (see below); these indicators serve to identify, locate or delimit regions that suffer from …
