Arkæikum: Forskelle mellem versioner
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{{Commonscat|Archean}}
* [http://videnskab.dk/miljo-naturvidenskab/jorden-har-mistet-en-fjerdedel-af-sit-vand Jorden har mistet en fjerdedel af sit vand. Videnskab.dk]
* [http://news.bbc.co.uk/1/hi/sci/tech/3321819.stm 17 December, 2003, BBCNews: Oldest evidence of photosynthesis] Citat: "..."What this demonstrates is that the Earth had a functioning [[biosfære|biosphere]] before 3.7 billion years ago," Professor Rosing told BBC News Online...If their findings are correct, life was very sophisticated, very early on in [[Jorden|Earth]] history," said Buick...But [[liv|life]] may be older and more robust than we thought..."
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