Answer | Crossword Clue |
---|---|
ISOTOPES | Carbon 12 and carbon 14 |
radiocarbon | a radioactive isotope of carbon, specif carbon-14 |
radiocarbons | RADIOCARBON, a radioactive isotope of carbon, specif carbon-14 |
ISOTOPES | Carbon 14 and others |
ISOTOPES | Carbon 14 and uranium 235 |
ISOTOPES | Carbon 14 and strontium 90 |