Hemp and marijuana both originate from the same lineage of the genus Cannabis. Cannabis has three special natural species namely Sativa, Indica, and Ruderalis. Marijuana refers to cannabis that belongs to the Sativa and Indica family. Both species have unique differences both in physical characteristics and growing patterns that differentiate them. Marijuana also accommodates hybrid cannabis strains that are made artificially by combining the characteristics of Sativa and Indica species. This combination produces differences in the physical characteristics of the strains and chemical composition.
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Source : Hemp or Marijuana – Why the Police Can't Tell Them Apart
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