This is a correct answer to the following question about Cannabis (drug). Yes or no?
Answer: Pharmacologically, the principal psychoactive constituent of cannabis is tetrahydrocannabinol (THC); it is one of 483 known compounds in the plant, including at least 84 other cannabinoids , such as cannabidiol (CBD), cannabinol (CBN), tetrahydrocannabivarin (THCV).
Question: how was marijuana discovered
