Burning any hydrocarbon fuel releases carbon dioxide and water vapour. Emissions of both carbon monoxide, carbon dioxide and dioxin have decreased. Natural seeps of methane and carbon dioxide occur. These organisms are capable of converting carbon monoxide and water to carbon dioxide and oxygen. Ocean acidification results from increases in atmospheric carbon dioxide. Reaction with carbon dioxide gives barium carbonate. Impacts also include reducing soil moisture and a reduction in reabsorption of carbon dioxide emissions. The volcano began releasing increasing quantities of gases rich in sulfur dioxide and elementary sulfur. Microorganisms degraded the peat into carbon dioxide and water. Methanol is produced by hydrogenation of carbon dioxide. It could be caused by carbon dioxide or methane. First, gases with a high concentration of carbon dioxide are produced. Oceans absorb 30 percent of all carbon dioxide produced by humans. The SRES contains "scenarios" of future changes in emissions of greenhouse gases and sulfur dioxide. Oceans work as a sink absorbing excess anthropogenic carbon dioxide ().