There are two primary factors to be considered in the evaluation of biomass fuels: Fuel supply, including the total quantities available, the stability of the supply or of the industry generating the fuel, and competitive uses or markets for the fuel.
Graffiti (/É¡rÉËfiËti/ ; [É¡rafËfiËti] ; plural of graffito : a graffito, but these graffiti) are writing or drawings that have been scribbled, scratched, or painted illicitly on a wall or other surface, often in a public place.he term graffiti referred to the inscriptions, figure drawings, and such, found on the walls of ancient sepulchres or ruins, as in the Catacombs of Rome or at Pompeii. Use of the word has evolved to include any graphics applied to surfaces in a manner that constitutes vandalism.
In modern times, paint (particularly spray paint) and marker pens have become the most commonly used graffiti materials. In most countries, marking or painting property without the property owner's permission is considered defacement and vandalism, which is a punishable crime. Graffiti may also express underlying social and political messages and a whole genre of artistic expression is based upon spray paint graffiti styles.