What companies produce natural gas?

Power companies to generate electricity. Gas supply companies that put gas in tanks and sell to customers for heating and cooking fuel. Plastic, paint and steel manufacturers that use natural gas in...

Yes, Canada is a major producer of natural gas, especially Alberta. Canada exports some of it's natural gas to the United States.

The burning of any fossil fuel creates this gas. The total combined fuel use by man produces over 5% of all CO2 produced. Levels of CO2 in the atmosphere can reach as high as 0.037% in some areas....

The natural gas is combusted (or burned) to turn into electricity.