Lower limit of carbon dating


Carbon dioxide (CO 2 ) is produced by all aerobic organisms when they metabolize carbohydrates and lipids to produce energy by respiration . [5] It is returned to water via the gills of fish and to the air via the lungs of air-breathing land animals, including humans. Carbon dioxide is produced during the processes of decay of organic materials and the fermentation of sugars in bread , beer and wine making. It is produced by combustion of wood and other organic materials and fossil fuels such as coal , peat , petroleum and natural gas . On the other hand, it is an unwanted byproduct in many large scale oxidation processes, for example the production of acrylic acid (over 5 million tons/year). [6] [7] [8] [9]


Lower limit of carbon dating

Lower limit of carbon dating