Question

why is radioactive dating important when approximating the age of earth? scientists can identify different life forms using index fossil records. scientists can examine how temperature changes within earth’s interior. scientists can determine the order of when rocks formed on earth. scientists can analyze changes in chemical concentration of atmospheric gases.

Explanation:

Radioactive dating is based on the decay of radioactive isotopes in rocks. By measuring the ratio of parent - daughter isotopes, scientists can determine the age of rocks, which helps in understanding the order of rock - formation on Earth. This is crucial for approximating the age of the Earth. The other options are not the main reasons for the importance of radioactive dating in determining Earth's age.

Answer:

Scientists can determine the order of when rocks formed on Earth.