Question

what elements' isotopes are used to estimate how old something is? why do scientists use more than one type? be specific!

Answer 1

Step-by-step explanation:

To measure the age of plant and animal remains from the more recent past, scientists use a radioactive isotope of carbon, called carbon-14, as their clock. As carbon-14 decays, with a half-life of about 5,730 years, it becomes nitrogen-14.