Liability 发表于 2025-3-25 03:37:32
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A Dictionary of Earth Sciences,ive. This constraint on which RNA polymers survive and accumulate means that a relatively small amount of nucleotide material is required to synthesize all possible tRNA. This assumes that prebiotic RNA polymerization and duplication is possible, but there are laboratory experiments suggesting just套索 发表于 2025-3-26 14:37:34
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https://doi.org/10.1007/978-1-4419-1223-7n years after the advent of oxygenic photosynthesis. Given that the probable source of atmospheric oxygen is from cyanobacteria presents a problem in this long delay in oxidizing the Earth’s surface and atmosphere..The carbon isotope record shows long-term consistency of carbon isotopes in organic s