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 홈
> 문의 > Q&A게시판 |
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| wxiCcjGXrqj |
| 작성자 : Jerald |
작성일 : 2021-10-08 오후 2:42:08 |
조회수 : 788 |
| What's the interest rate on this account? meclizine medscape Investigating some of the most ancient soil samples found on Earth – some three billion years old – the team unexpectedly discovered low concentrations of oxygen. This startling finding conflicts with prior research, which suggested that oxygen first began filling the atmosphere 2.3 billion years ago, representing a 700 million year discrepancy.
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