In DSM, nicotine dependence is included under the general definition of substance dependence.  The essential feature of Substance Dependence is a cluster of cognitive, behavioral, and physiologic symptoms indicating that the individual continues use of the substance despite significant substance-related problems.
Greenhouse Covering. Whether you're replacing existing greenhouse coverings or building a greenhouse you're sure to find the best greenhouse covering at FarmTek. Greenhouse glazing is the material that covers the greenhouse frame and the most widely used materials are polycarbonate and poly film.
At Planet Natural we know what you need. From nursery pots and seed starting supplies to grow lights and plant supports, we have what youâre looking for! There are greenhouse kits available for just about any budget, and most (even if you arenât handy with a hammer) can be built in less than a day.