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).
If the test is used as a drug screen, all prescription drugs can be detected as well as illegal drugs and alcohol. Some of the most commonly tested for chemicals include: 1  Cocaine. 2  Amphetamines. 3  Heroin.4  Morphine. 5  Phencyclidine (PCP) (also known as angel dust). 6  Alcohol. 7  Benzodiazepines.8  Hydromorphone.f the test is used as a drug screen, all prescription drugs can be detected as well as illegal drugs and alcohol. Some of the most commonly tested for chemicals include: 1  Cocaine. 2  Amphetamines. 3  Heroin. 4  Morphine.