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Author Question: Which of the following radioactive isotopes would be best for age-dating a rock from 50,000 years ... (Read 88 times)

cnetterville

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on: Jul 14, 2018
Which of the following radioactive isotopes would be best for age-dating a rock from 50,000 years ago?
 
  A) uranium-238
  B) carbon-14
  C) potassium-40
  D) thorium-232

Question 2

Who first formulated the principle of uniformitarianism?
 
  A) Aristotle
  B) Lyell
  C) Steno
  D) Hutton


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cassie_ragen

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Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: D


cnetterville

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Reply 2 on: Jul 14, 2018
Thanks for the timely response, appreciate it

ghepp

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Reply 3 on: Yesterday
:D TYSM

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