Paragraf Tamamlama 126. Soru

126.

Radiocarbon dating works by measuring an object for an element called carbon 14, traces of which are contained in all
organic substances. …………. . This is possible because, although the amount present an living organisms remains nearly constant, when animals and plants die, their level of carbon 14 begins to decrease at a known, fixed rate. Thus the amount of remaining carbon 14 in an object provides a measurement of its age.