Alcoholic fermentation occurs in yeast and produces ethyl alchol from pyruvate.
Lactic acid fermentation occurs in animals and produces lactic acid from pyruvate.
Both of these processes can proceed in the absence of oxygen.
Answer:
D shrub clippings
Explanation:
this is because they don't decompose like the other choice and are not rich in nutrients
The decomposers are of two kinds, aerobic decomposers and anaerobic decomposers. The aerobic decomposers need the oxygen from the air to break down the dead and decaying matter into simple salts, sugars and hydrocarbon gases. The anaerobic decomposers do not require oxygen for the break down of dead and decaying matter. They break down the matter into various forms of hydrocarbons, sulphides and nitrogenous compounds.
When a dead and decaying matter gets buried deep within the Earth where there is an absence of the decomposers, it takes the form of crude oil, coal, peat, asphalt, and natural gas. The matter gets compressed by the weight of the rocks above and changes its form.