The oesophagus or food pipe is part of the digestive system. It is also sometimes called the gullet. It is the tube that carries food from your mouth to your stomach. It is about 26cm (10.5 inches) long in adults.
Benzo[a]pyrene is a polycyclic aromatic hydrocarbon found in coal tar with the formula C 20 H 12. Its metabolites are mutagenic and highly carcinogenic, and it is listed as a Group 1 carcinogen by the IARC.The compound is one of the benzopyrenes, formed by a benzene ring fused to pyrene, and is the result of incomplete combustion at temperatures between 300 Â°C (572 Â°F) and 600 Â°C (1,112 Â°F).roperly speaking, benzo[ a ]pyrene is a procarcinogen, meaning that the mechanism of carcinogenesis of benzo[ a ]pyrene depends on enzymatic metabolism of benzo[ a ]pyrene to the ultimate mutagen, benzo[ a ]pyrene diol epoxide, pictured above at right.
The chemical formula for Pyrite is FeS2 (Iron sulphide). It is a naturally occurring mineral; it is the most abundant Sulphide mineral on the earth. Pyrite or iron pyrite is also used to name Iron sulphide.Also, Foolâs gold is another name for Pyrite. The word Pyrite is a Greek word; the word pyr means fire. In early days, this had been used to make fire by striking against metal or any other hard material.owever, when you closely monitor the color of these two materials, gold and pyrite, the difference between gold and pyrite can be understood easily. It is the first simple method of distinguishing one from another.