THC and Marijuana
THC is produced naturally by the flowers of the cannabis plant. It forms a clear sticky residue on the flower known as trichomes.
The amount of THC found in cannabis varies from plant to plant. While some types of marijuana (such as hemp) have almost no THC at all, others have been selectively bred to maximize THC content. The most potent strains of marijuana contain as much as 30% THC by weight.
Cannabidiol (CBD) is another common cannabinoid found in marijuana. Medical marijuana is frequently tested for THC and CBD since both are believed to have unique effects.
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