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.
I can’t refer to anything, so how am I supposed to help :(
Answer: Orbit
Explanation: The Earth’s axis being in orbit means that the Earth is in different positions around the sun at different points in time, causing day and night.