Find out when teenagers need to file a tax return and how to file a tax return for a teenager. 2011 Income Requirements for Teenagers: For the 2011 tax year, which is filed in 2012, teenagers claimed as a dependent on your return must file their own taxes if they meet any of the following conditions: 1  Earned income is greater than $5,800. 2  Unearned income is greater than $950. 3  Self-employment net earnings are greater than $400.
Fermentation is a metabolic process that converts sugar to acids, gases, or alcohol. It occurs in yeast and bacteria, and also in oxygen-starved muscle cells, as in the case of lactic acid fermentation.
All beer leaves the brewer carbonated. This is accomplished in one of two ways - natural and forced carbonation. In both cases, beer and carbon dioxide are sealed in a container under pressure. The beer absorbs the CO2 giving the beer its fizz. Natural carbonation results from the fermentation process. Fermentation produces alcohol and carbon dioxide as yeast digests the sugar in the wort. Although most of the carbon dioxide is allowed to escape during fermentation the brewer will seal the beer in a container when it is almost complete. This is how natural carbonation is used to carbonate beer in holding vessels at the brewery and in casks. Anther way to use natural carbonation is in the bottle.