Question

6 the process of fermentation can only occur in an environment that ________. has a high concentration of hydrogen and helium has oxygen present lacks oxygen includes hydrogen and oxygen skip 5/12 complete

Explanation:

Fermentation is an anaerobic process, meaning it occurs in the absence of oxygen. Microorganisms like yeast and bacteria use fermentation to obtain energy when oxygen - rich respiration is not possible.

Answer:

C. lacks oxygen