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 is a harmful substance because it has 421 chemicals. Marijuana is stronger than it was 10 years ago, and this new, potent marijuana presents dangers unrecognized years ago. Marijuana is far worse for the lungs than tobacco. Marijuana causes damage to the reproductive system. The psychoactive chemicals in marijuana are fat soluble and stay in the human body for a month, increasing the danger of exposure. Marijuana causes brain damage and a behavioral disorder known as amotivational syndrome.