Broad Spectrum CBD contains an unknown and unmeasured range of naturally-occurring compounds from the cannabis plant, typically with low amounts of THC. Full Spectrum CBD contains an unknown and unmeasured amount of all the compounds of that particular strain of cannabis plant, including THC. Logic doesn't support consuming any product that doesn’t list all of its ingredients. Compounds like THC which is highly psychoactive and CBN which is also Psychoactive can be present at amounts that can cause impairment and a positive result on a drug screening. There are no national standards for testing or labeling of CBD products. Because CBD is most commonly consumed as an isolate/distillate it can contain concentrated amounts of many chemical compounds found in cannabis and hemp. Cannabis and hemp are often used in phytoremediation because they are resistant to the harmful effects of high concentrations of such metals as copper, cadmium or nickel, but also to accumulate them in leaves with high efficiency. The major advantage of cannabis and hemp over other phytoremedians is the extensive rhizosphere. The long roots of this plant are able to clean deeper parts of the soil than most plants used for this purpose. Hemp and cannabis phytoremediation is therefore more comprehensive.