... , marijuana is the most popular substance chosen by young people for regular use. The source of marijuana is the hemp plant (cannabis sativa) and its content of THC (delta-9-tetrahydrocannabinol) and other cannabis found in the leaves and flowering shoots of the plant. The drug dose delivered from any particular preparation of marijuana greatly varies; the concentration of THC may vary as ... a resinous substance, taken from the tops of female plants, which contains the highest concentration of THC These type of drugs causes mood changes and changes in your mental capacity to function no...

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