| Q.20 | Which of the following is a way of dating fossils of organisms? | |
| Ans | 1. Detecting the ratios of same isotopes of the same element in the fossil material | |
| 2. Detecting the ratios of same isotopes of the different element in the fossil material | ||
| 3. Detecting the ratios of different isotopes of the same element in the fossil material | ||
| 4. Detecting the ratios of different isotopes of the different element in the fossil material |
Correct Ans Provided: 3