Cannabigerol (CBG) is a common cannabinoid located in basically all cannabis vegetation. Like all the cannabinoids pointed out to this point, CBG is produced as CBGA from the trichome in the cannabis flower. All the first cannabinoids are made from CBGA. The above chemical reaction describes what happens in respiration, https://messiahbkqwe.dreamyblogs.com/33317030/cannabis-flower-an-overview