1. Lactic acid fermentation: This process occurs in animals and some bacteria. Glucose is broken down into pyruvate, and then pyruvate is converted into lactic acid. This process does not require oxygen and produces a small amount of ATP.

2. Alcoholic fermentation: This process occurs in yeast and some bacteria. Glucose is broken down into pyruvate, and then pyruvate is converted into ethanol and carbon dioxide. This process does not require oxygen and produces a small amount of ATP.

Both of these processes are considered anaerobic respiration because they do not require oxygen. However, they differ in the end products they produce:

* Lactic acid fermentation produces lactic acid.

* Alcoholic fermentation produces ethanol and carbon dioxide.