Carbon is found in … Oxford Advanced Learner's English Dictionary CARBON — car ? 2 … Английский основной разговорный словарь CARBON — n. I joined a Collins COBUILD - Толковый словарь английского языка для изучающих язык CARBON Longman DOCE5 Extras
They are derived from biomass that initially contained atmospheric levels of 14 C. A hydrocarbon found in beach sediments, for example, might derive from an oil spill or from waxes produced by plants. Recommended Web-info Radiocarbon from
13-62. Hedman, Matthew. 2009 <http://www.c14dating.com/int.html>. When Libby and his colleagues developed this dating system in the 1940’s, they relied on the radioactivity of carbon-14’s unstable nuclei. Previously, geologists believed that