Answered

Which statement explains why carbon-14 dating cannot be used to date ancient rocks?
O Carbon-14 decays at a varying rale.
O Carbon-14 decays quickly leaving the amount too small to measure.
O Carbon-14 can be used only to date the remains of organisms.
O Carbon-14 has a half-life that is much longer than potassium.



Answer :

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The statement that explains why carbon-14 dating cannot be used to date ancient rocks is:

- Carbon-14 decays quickly leaving the amount too small to measure.

This is because carbon-14 has a relatively short half-life of about 5,730 years. As a result, after thousands of years, the amount of carbon-14 remaining in a sample becomes too small to accurately measure. This limitation makes carbon-14 dating ineffective for dating rocks that are millions or billions of years old. Instead, other radiometric dating methods like uranium-lead dating or potassium-argon dating are used for dating ancient rocks due to their longer half-lives and suitability for older geological materials.

I hope this explanation helps clarify why carbon-14 dating is not suitable for dating ancient rocks. Let me know if you have any more questions or need further assistance.