Footnote
2Almost all carbon on earth consists of the stable isotopes carbon-12 (98.9%) and carbon-13 (1.1%). About one in every \(10^{12}\) carbon atoms on earth is carbon-14.
Growth and decay
2Almost all carbon on earth consists of the stable isotopes carbon-12 (98.9%) and carbon-13 (1.1%). About one in every \(10^{12}\) carbon atoms on earth is carbon-14.