Question

true or false: fermentation occurs when oxygen is present
true the whole statement is true.
false some of the statement is false.

Explanation:

Fermentation is an anaerobic process, meaning it occurs in the absence of oxygen. When oxygen is present, cellular respiration (aerobic) typically occurs instead of fermentation. So the statement "Fermentation occurs when oxygen is present" is false.

Answer:

False. Some of the statement is false.