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.
The Best Materials to Cover your Greenhouse. 1  Glass: The traditional greenhouse covering, glass is the preferred material for permanence. 2  Film Plastic: Film plastic is one sixth to one tenth of the cost per square foot of a glass covered structure.
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.