Science: Absolute Age of Rocks and Fossils Quick check.
Which quantity helps determine the absolute age of rocks and fossils?
1. the difference between the number of protons and neutrons in carbon-14
2. the ratio of carbon-12 to carbon-14
3. the ratio of protons to neutrons in carbon-14
4. the difference between the amounts of carbon-12 and carbon-14
1 answer
The correct answer is 4. the difference between the amounts of carbon-12 and carbon-14.