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).
Dental/Medical treatments: Cain-based products, especially Novocaine, have been known to cause false positives for cocaine on a urine drug test and other drug tests as well.Some legal products actually contain small amounts of illegal chemicals.ational laboratories state that the EMIT test is wrong 25% to 30% of the time, and can result in false during a urine drug test positives from legal substances up to 38% of the time!