Footnote
3One nanogram is \(10^{-12}\) grams. This is a realistic unit here, as carbon-14 is rare! But there are still over \(10^{13}\) atoms of carbon-14 in one nanogram.
Growth and decay
3One nanogram is \(10^{-12}\) grams. This is a realistic unit here, as carbon-14 is rare! But there are still over \(10^{13}\) atoms of carbon-14 in one nanogram.