Canada's natural resources include energy, water, forest and mineral resources. South Canada has a copious supply of natural gas, shale and coalbed methane. The country's freshwater reserves serve as a vast renewable water supply. Large reserves of metallic ores, such as silver, gold, copper, iron, zinc and lead, are mined in the north and across the Canadian Shield, as well as uranium, limestone and diamonds.
The boreal forest that prevails throughout Canada provides valuable timber supply. The trees are cut down to create pulp, paper and wood products. The timber reserves in the country provide raw materials for constructing structures, such as buildings, houses and bridges. Canada is also the second-largest exporter of forest products in the word, and its forest industry contributes greatly to the country's net trade. The arable land of Canada produces crops that include tobacco, peaches and grapes. Agriculture is also a primary industry, with different regions being known for different products. The southern parts of Ontario and Quebec produce quick-maturing wheat, British Columbia focuses on fruits, and crops other than grains are emphasized in the Maritimes.
While the resources in the south of Canada are exploited and depleted, the resource industries are exploring the north for resource extraction. Natural gas and oil reserves have been discovered in the north, and explorations are extending the search in the Arctic Ocean.