lactic acid
Methane is a byproduct or waste from the decomposition of organic material in anaerobic conditions. Without oxygen (anaerobic) the bacteria convert the carbon compounds to CH4 not CO2.
Urea
Anaerobic Respiration.
The yeast in beer. It lacks oxygen and so reverts to anaerobic respiration, where the byproduct is alcohol.
liver
yes
Sealed Source
About 90 seconds
Aerobic respiration is the metabolism of adenosine triphosphate (ATP) using oxygen. Anaerobic respiration is the metabolism of ATP without using oxygen.
It becomes light and exits the star.
carbon dioxide CO2 and Water H20
CO@ ... a byproduct of yeast metabolism.