4000 years ago, Marijuana was first appeared only as a plant grown for many uses because of its fiber to make clothing, a paper, and rope in the Chinese culture. Marijuana is a plant that composed of the dried leaves, it has it's flowers, stems and a seed. Pharmacologic speaking, it's principal psychoactive constituent of cannabis is called tetrahydrocannabinol- which is one of 483 known compounds in the plant which includes more or less 84 other cannabinoids. For some, It is used as a psychoactive recreational drug for medical ailments and some also for religious and spiritual purposes.