Demand for green: energy (wind and solar power) Canada as a producer and consumer of energy. Fossil fuel hydrocarbons (coal, crude oil, natural gas, natural gas liquids) Residential, agricultural, commercial/institutional, industrial and transportation sectors. Air pollutants from fossil-fuel burning: global climate change and ocean acidification. Coal burning produces more co2 than petroleum, petroleum more than natural gas. The methane that arises from fossil-fuel use primarily comes from coal and petroleum recovery and natural gas pipeline leaks: acid deposition. Sulfuric acid and sulfate formed in the atmosphere from so2 radicals. Nitric acid and nitrate formed in the atmosphere from nox: ambient air. So2 is emitted in especially high amounts by coal-burning facilities, and to lesser extents by burning oil and natural gas. Nox forms not from the fuel but from a reaction between nitrogen and oxygen during high-temperature combustion. Carbon monoxide (co) product of incomplete combustion. In urban areas upto 90% is from gasoline combustion.