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Question
The decay of 40K has a half of 1.3 x 109 years. The age of the earth is estimated at 4.6 x 109 years. The decay of 40K is a major heat source for the earth's interior. Relative to today, how much more heat was produced by 40K in the early Archaeon era or 3.9 x 109 years ago?A) 2x
B) 4x
C) 6x
D) 8x
Answer
This answer is hidden. It contains 1 characters.
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