Answer:
The discovery of the natural radioactive decay of uranium in ... Uranium- 238, Lead-206, 4.5 billion years ... of the isotope carbon-14, which has a half-life of 5,730 years.
Answer:
Because the half-life is as long as Earth has existed, virtually all rocks on Earth still have most of their uranium-238. So, measurements can easily be obtained.
Explanation:
exact answer from pluto/ edmentum
