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.
Procedure: 1  Fill the 10 small pots with equal amounts of dampened potting soil. 2  With a pencil, make holes about 2 centimeters deep in each pot. 3  Place the 10 bean seeds, one per pot, and cover the seeds with some of the soil. 4  Place 5 of the pots in the greenhouse or on a window sill on the sunny side of the house.