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Methane gas is a form of greenhouse gas that is over 20 times more effective than carbon dioxide in trapping heat in the atmosphere. Methane gas can remain in the atmosphere for about 9 to 15 years. Methane is emitted from a number of natural and human-influenced sources.ethane gas is a form of greenhouse gas that is over 20 times more effective than carbon dioxide in trapping heat in the atmosphere. Methane gas can remain in the atmosphere for about 9 to 15 years. Methane is emitted from a number of natural and human-influenced sources.
Methanol is a highly toxic colorless liquid that may explode when exposed to flames. Other common names for methanol are methyl alcohol and wood alcohol. Methanol occurs naturally in wood and volcanic gases and is a product of decaying organic material such as vegetation.It is also emitted from gasoline and diesel engines and from burning trash and plastics. The chemical formula for methanol is CH4O.Methanol is used in antifreeze products and as a solvent and is an ingredient of gasoline. It is used as an ingredient of some paint strippers.t is also emitted from gasoline and diesel engines and from burning trash and plastics. The chemical formula for methanol is CH4O. Methanol is used in antifreeze products and as a solvent and is an ingredient of gasoline.