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
Weymouth Lowlands sparse and the few villages are small and compact. In the west the landscape is more varied, wooded and undulating than the eastern part of the Lowlands. The height of the land rises from below sea level to around . Weymouth Lowlands The Weymouth Lowlands form a natural region on the south coast of England in the county of Dorset. Much of the area lies with the Dorset Area of Outstanding Natural Beauty. According to Natural England, who have designated the Weymouth Lowlands as National Character Area 138, they cover an area of 13,251 hectares; a coastal strip between about