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13 November, 13:52

What is Rex most likely trying to figure out about the rock formation?

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  1. 13 November, 14:02
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    He is trying to figure out its age.

    Explanation:

    Rex is finding a strange and very interesting form of a rock. He took a small sample in order to do research. He was trying to measure the amount of radioactive uranium with the radioactive lead.

    This way he wanted to show how fast are these objects falling apart depending on the chemical elements they contain.
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