The cannabis sativa plant consists of two key species: hemp and marijuana. Both contain CBD and THC (tetrahydrocannabinol), which causes that psychoactive ‘significant’. But hemp contains a much larger proportion of CBD and only trace quantities of THC, which is why CBD is usually extracted from the hemp plant http://myvaporlabai.total-blog.com/details-fiction-and-cbd-for-dogs-vancouver-bc-21914105