Answers MO-Earth and Space Science A Spheres of Earth — Unit testQuestion 20

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QuizMultiple Choice

Spheres of Earth — Unit test

Question 20 of 20 • MO-Earth and Space Science A

After two half-lives, how much of the original material has decayed?

Answer

A

25 percent

B

50 percent

C

75 percent

D

100 percent

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