a landfill site also known as a tip, dump, rubbish dump, garbage dump or dumping ground and, in archeology as a midden is a site for the disposal of waste materials. landfill is the oldest and most common form of waste disposal, although the systematic burial of the waste with daily, intermediate and final covers began in 1940s. in the past, refuse was simply left in piles or thrown into pits.
sugar is the generic name for sweet-tasting, soluble carbohydrates, many of which are used in food. table sugar, granulated sugar, or regular sugar, refers to sucrose, a disaccharide composed of glucose and fructose. by law in the united states sucrose is the only substance which can be called 'sugar' on food labels. simple sugars, also called monosaccharides, include glucose, fructose, and .
united kingdom of great britain and northern ireland flag anthem: 'god save the queen' royal coats of arms: show globe show map of europe location of the united kingdom dark green in europe dark grey location of the united kingdom, crown dependencies and british overseas territories red capital and largest city london official and national english regional and minority .
the united kingdom of great britain and northern ireland, commonly known as the united kingdom uk or u.k. or britain, is a sovereign country located off the northwestern coast of the european mainland. the united kingdom includes the island of great britain, the northeastern part of the island of ireland, and many smaller islands.
high-density polyethylene hdpe or polyethylene high-density pehd is a thermoplastic polymer produced from the monomer ethylene.it is sometimes called 'alkathene' or 'polythene' when used for hdpe pipes. with a high strength-to-density ratio, hdpe is used in the production of plastic bottles, corrosion-resistant piping, geomembranes and plastic lumber.
polyurethane pur and pu is a polymer composed of organic units joined by carbamate urethane links. while most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available. polyurethane polymers are traditionally and most commonly formed by reacting a di- or triisocyanate with a polyol.