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 Greenhouse Megastore we have experience with numerous school and commercial greenhouse construction projects. We can help you through every step of your school or commercial greenhouse project, from grant writing, to permitting, to turnkey greenhouse construction. Contact us to start the process with our help.