Here's how to care for an aloe vera of your own. About This Plant. There are hundreds of varieties of aloe plants, which are indigenous to Africa and a few neighboring areas. Aloes come in many varieties that range in size from a few inches to tree heights of 30 to 40 feet, in the case of the kokerboom (or quiver tree).
Marijuana smoke smoke contains a similar range of harmful chemicals to that of tobacco smoke (including bronchial irritants, tumor promoters and carcinogens) (Hoffmann et al, 1975).
DEA. The U.S. Drug Enforcement Administration lists marijuana in the most restrictive of five classes that the agency uses to regulate dangerous drugs. Marijuana is classified as a Schedule I substance, which is the ranking reserved for drugs with the greatest potential for abuse and with no medicinal value.Heroin, ecstasy and LSD are listed in that category, too, while cocaine and methamphetamine rank one level lower than marijuana, as Schedule II.arijuana has been classified as a Schedule I drug, the highest rank by the Drug Enforcement Administration, since the 1970s. Marijuana's listing among the most dangerous drugs has been heavily influenced over the years by politics and public opinion, while advocacy groups have been working to change it for decades.