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.
the two main types of fermentation are alcoholic fermentation and lactic acid fermentation. The two main types of fermentation are: 1.) Alcoholic fermentation 2.) Lactic a â¦ cid fermentation.+ 70 others found this useful.actic Acid fermentation where pyruvate is converted to lactate but there is no release of carbon dioxide. Alcohol Fermentation which is the conversion of pyruvate to carbon â¦ dioxide (CO2) and ethyl alcohol.