This is my attempt to explain air pressure in ductwork. This video is part of the heating and cooling series of training videos made to accompany my websites... This is my attempt to explain air pressure in ductwork. This video is part of the heating and cooling series of training videos made to accompany my websites... Skip navigation
Medical marijuana refers to the use of the Cannabis plant as a physician-recommended herbal therapy as well as synthetic THC and cannabinoids. So far, the medical use of cannabis is legal only in a limited number of territories, including Canada, Belgium, Australia, the Netherlands, Spain, and several U.S. states.
Topics covered include the following: 1  Qualifications to become a medical marijuana patient. 2  Conditions treatable with medical marijuana. 3  Health care providers who can legally recommend marijuana.  Steps to take after receiving a cannabis 1  recommendation. What is a medical marijuana card.  Why you should get a medical marijuana card.