A chain of thermonuclear reactions in which nitrogen isotopes are formed in intermediate stages and carbon acts essentially as a catalyst to convert four hydrogen atoms into one helium atom with the emission of two positrons. The entire sequence is thought to generate significant amounts of energy in the sun and certain other stars.carbon cycle nitrogen cycle
Zoom Through “Spin Class” With These 10 Cycling TermsCycling no doubt courses throughout our life and culture, but so does the language of the sport and activity. So, strap on your helmets: we're going to spin through some of the zippiest terms in cycling, past and present.
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Science definitions for carbon-nitrogen cycle
See carbon cycle.
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