Illustration showing the origins of life 3.5 billion years ago. Here we see (at upper left) the bombardment of Earth by extraterrestrial objects (from comets, meteorites, and other planets); the cooling of Earth; the presence of black smoker chimneys; the formation of primary sludge or living organic molecules; the development of living cells; the development of single-celled prokaryotes that divide and multiply; the formation of cyanobacteria 2 billion years ago; the development of stromatolites; the development of eukaryotes one billion years ago, as well as eukaryotes with chloroplasts; and the creation of pluricellular beings and widespread cell division (bottom right). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Christian Jegou |
Bildgröße: | 5002 px × 4017 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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