Canada has several physical features including coastal mountains, the Rocky Mountains, and the Canadian Shield region of rocky uplands. The climate varies regionally from humid continental in central and eastern Canada to marine west coast in southwest Canada, with tundra and ice cap climates in the far north. Canada has abundant natural resources such as fisheries along the coasts, agricultural production including wheat and cattle, and various minerals including nickel, zinc, uranium, lead, copper, gold, silver, coal, and the world's largest deposit of potash in Saskatchewan used to make fertilizer. Coniferous forests provide lumber and pulp used to make paper and newsprint.