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steposvetlana [31]
3 years ago
14

Which of the following is the main evidence of life in the early universe

Biology
1 answer:
Amiraneli [1.4K]3 years ago
7 0
Early cell structures
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if an element has a half-life of 30 million years and there is 12.5% of it remaining in a rock, how old is that rock
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The half-life of a substance is the amount of time it takes for half of that substance to decay. However, after two half-lives, half of the half remaining will decay, leaving you with one quarter of the original substance.

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Hope it helps:)

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