Even the age of earth has been estimated on the basis of what?
- Correct Answer: radioisotopes
- gasses
- membranes
- tree rings
Explanation: Radioactive isotopes, or radioisotopes, can be used to estimate the ages of not only of rocks, but also of fossils and artifacts made long ago by human beings. Even the age of Earth has been estimated on the basis of radioisotopes. The general method is called radioactive dating . To understand how radioactive dating works, you need to understand radioisotopes and radioactive decay.
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