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).
Marijuana. This mild hallucinogen, derived from the Cannabis sativa plant, is the most commonly abused illegal drug in the United States, according to the National Institute on Drug Abuse.When used, usually through smoking, marijuana acts as a central nervous system stimulant.arijuana. This mild hallucinogen, derived from the Cannabis sativa plant, is the most commonly abused illegal drug in the United States, according to the National Institute on Drug Abuse.