1)  Two examples of metalloids (13^th group) are [[1]] and [[2]].
2)  Fermentation is an [[3]].

The 13th group of metalloids includes silicon and germanium as two examples. Fermentation is one such example of a process that occurs in anaerobic conditions.

A metalloid is a type of element that primarily possesses characteristics from both metals and nonmetals, or that is a combination of both. Boron, silicon, germanium, arsenic, antimony, tellurium, and polonium are a few examples of metalloids.
Through the activity of enzymes, fermentation may be an organic process that causes chemical changes in organic substrates. It is the process of obtaining energy from carbohydrates without the presence of oxygen, according to biochemistry (thereby, anaerobic). Some of its types are lactic acid fermentation, ethanol/alcohol fermentation, and lactic acid fermentation.

Hence, the correct answers are silicon, germanium and an anaerobic process respectively.