Life on Earth first appeared as early as billion years ago, soon after ocean formation billion years ago , and not long after the formation of the Earth billion years ago. [1] [2] [3] [4] Earth's current life may have descended from an RNA world , although RNA -based life may not have been the first. The mechanism by which life began on Earth is unknown, though many hypotheses have been formulated and are often based on the Miller–Urey experiment . The earliest known life forms are microfossils of bacteria. billion year old Australian rocks are reported to have contained microorganisms . [5] [6] In 2016, scientists reported identifying a set of 355 genes thought to be present in the last universal common ancestor (LUCA) of all living organisms, already a complex organism and not the first living thing. [7]

N1 - Imported on 12 May 2017 - DigiTool details were: publisher = Tobelo, Indonesia: Institut Hendrik Van Dijken and BUMG-GMIH, 2012. editor/s (773b) = A Djurabasa, R Tindage and Rainy M P Hutabarat; Issue no. (773s) = 1; Parent title (773t) = Kenangan kepada Orang Benar Mendatangkan Berkat: Dokumentasi Kehidupan dan Pelayanan Para Ketua Sinode GMIH (1949 - 2012) (English: Response to the Righteous Bringers of Blessing: Documentation on the Lives and Ministries of the Moderators of the Chu.

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