What are the sources of some of inaccuracy

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-If you were sitting near a gram of protactinium-234 and a gram of uranium-234, both solid materials, which would you consider more dangerous to you? Explain giving two reasons.

-A scientist claimed that he radiocarbon dated a fossilized skull of a dinosaur and found it to be about 63 million years old. Do you support his claim? Provide at least one scientifically based reason why you do or do not support the claim

- Explain why radiocarbon dating is not 100% accurate. What are the sources of some of this inaccuracy

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