Energy flows from producers to primary consumers, to secondary consumers, to tertiary consumers... Energy is lost between trophic levels in the form of heat through cell respiration, faeces, tissue loss and death. Some of this lost energy is used by detritivores and saprotrophs.
Methanol, acetone, and isopropanol belong to the first group. These substances were detected and proposed as alcoholism indicators in connection with congener alcohol analyses of blood samples from DWIs. Methanol, in particular, has been adopted as a powerful indicator of alcohol misuse.
by Craig Freudenrich, Ph.D. The alcohol found in alcoholic beverages is ethyl alcohol (ethanol). In this structure, C is carbon, H is hydrogen, O is oxygen and the hyphens are the chemical bonds between the atoms. For purposes of clarity, the bonds between the three hydrogen atoms and the left carbon atom are not shown.