Geography of South America world by drainage area—the Amazon River and the more southerly Paraná River. The other major river of this central lowland is the Orinoco River, which has a natural channel linking it with the Amazon. Most of this central lowland is sparsely populated because the soils are heavily leached, but in the south is the very fertile pampas of Argentina—one of the world's major food-producing regions where wheat and beef cattle are pre-eminent. The natural vegetation of the northern lowlands are either savanna in the northern "llanos" and southern "campos", or tropical rainforest throughout most of the Amazon basin. Efforts to
2005 South American Junior Championships in Athletics 2005 South American Junior Championships in Athletics The 36th South American Junior Championships in Athletics were held at the Estadio Municipal Jorge Newbery in Rosario, Argentina from October 1–2, 2005. Detailed result lists can be found on the Atletismo Rosario and on the "World Junior Athletics History" website. An unofficial count yields the number of about 294 athletes from about 13 countries: Argentina (60), Bolivia (1), Brazil (70), Chile (38), Colombia (21), Ecuador (16), Guyana (2), Panama (4), Paraguay (25), Peru (14), Suriname (2), Uruguay (17), Venezuela (24). Medal winners are published for men and women, and on the IAAF