Urea is a raw material used in the manufacture of many important chemicals, such as: 1  Various plastics, especially the Urea-formaldehyde resins. 2  Various adhesives, such as Urea-formaldehyde or the urea-melamine-formaldehyde used in marine plywood. 3  Potassium cyanate, another industrial feedstock. 4  Urea nitrate, an explosive.
There are many types or strains of marijuana, however they basically fit into two categories; Indica and Sativa.Breeders will often cross strains to change the growing or properties of the original. As a rule of thumb, generally Indicas tend to be shorter, stockier plants with smaller, denser and smellier buds.here are many types or strains of marijuana, however they basically fit into two categories; Indica and Sativa.
Marijuana Lighting, Marijuana Grow Lights and Lamps. To grow the indoor marijuana plants is to learn the right types of lighting systems. There are three types of systems of lighting that are excellent ones for the cannabis plants, these are: the incandescent, fluorescent, and the high intensity discharge.