Fermentation normally occurs in an the absence of oxygen (called anaerobic) but is can occur in its presence
Decomposition uses cellular respiration to break down dead plant matter--this means that oxygen is involved in the process. Fermentation is another word for anaerobic decomposition, which occurs without oxygen.
Fermentation
Anaerobic means "without air (oxygen)". Fermentation allows some cells to make ATP without having oxygen present. Fermentation is not nearly as efficient as aerobic respiration, since it produces a net yield of only 2 ATP per glucose molecule (aerobic respiration produces 36-38 ATP per glucose).
Fermentation is an anaerobic response for yeast. Yeast will respire aerobically in the presence of oxygen and will not produce alcohol.
Fermentation can occur anywhere given that three conditions are met. #1...yeast must be present. #2.... Sugars are food for the yeast to live on and therefore must be present. #3.... The right conditions by which the yeast is confortable, like the right temperatures.....there you have it.
oxygen.
Oxygen
oxygen
in an environment where there is little or no oxygen. aerobic respiration requires oxygen ad when it is not present fermentaion (anaerobic respiration) occurs because it works when oxygen isn't there
Fermentation occurs in the Cytosol (cytoplasm), without oxygen.
oxygen needed for cellular respiration
Basically Fermentation is an Anaerobic respiration (i.e. Oxidation of energy compounds in the absence of oxygen).That means the answer to your question is 'oxygen'.
oxygen
If oxygen is not available in the body especially muscle it leads to fermentation in an anaerobic respiration.
Oxidization occurs when oxygen is present and two or more substances interact, and one losses an electron. In anaerobic situations (when oxygen is not present) fermentation occurs. Fermentation derives energy (ATP) from compounds that are being oxidized.
oxygen
Where there is little or no oxygen