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).
All told, 20 different drugs were evaluated, including cocaine, heroin, ecstasy, amphetamines, and LSD. Ranked from most to least dangerous, the ten most dangerous substances were deemed to be: Heroin - popular street names include smack, skag, and junk. Cocaine - often referred to as snow, flake, coke, and blow. Barbiturates - popular slang names include yellow jackets, reds, blues, Amy's, and rainbows.