MCQOPTIONS
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| 1. |
Age of a fossil may be found out by determining the ratio of two isotopes of carbon. The isotopes are ? |
| A. | C - 12 and carbon |
| B. | C -12 and C - 13 |
| C. | C - 13 and C - 14 |
| D. | C - 12 and C - 14 |
| Answer» E. | |