Kopi tiam is lighter in colour than normal coffee beans that uses sugar – hence the name 'white coffee'. Kopitiams in Indonesia are very similar to those in Malaysia or Singapore. Originally run by local Chinese people, they can be found in many residential areas. Old-fashioned kopitiams are usually located at shop houses, and often have a quite run-down appearance. The term kedai kopi or warkop (which stands for warung kopi) is more often used. More recently, modern kopitiams have emerged, and can be found in many shopping malls, particularly in big cities such as Jakarta, Medan, Batam and Surabaya. These attract
Metabolic waste excreta. Some mammals including humans excrete uric acid as a component of their urine but it is only a small amount. These compounds form during the catabolism of carbohydrates and lipids in condensation reactions, and in some other metabolic reactions of the amino acids. Oxygen is produced by plants and some bacteria in photosynthesis, while CO is a waste product of all animals and plants. Nitrogen gases are produced by denitrifying bacteria and as a waste product, and bacteria for decaying yield ammonia, as do most invertebrates and vertebrates. Water is the only liquid waste from animals and photosynthesizing plants.