Which sample would be appropriate for dating by means of radioactive carbon?
A) A mastodon that is about 15,000 years old
B) A Homo erectus skeleton thought to be around 800,000 years old
C) The sediments of the Cretaceous Sea where they are now exposed on land
D) An igneous intrusion from a 250-million-year-old volcano eruption
E) Stromatolites containing 3-billion-year-old bacterial mats
Correct Answer:
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