Ricerche recenti
Opzioni di ricerca
Amministrato da:
mastodon uno admin 
With the locution “Great Oxidation Event” we usually refer to the first major mass extinction that has been known on Earth. Occurred around 2,5 billion years ago, it consisted in a huge rise in oxygen in the atmosphere and shallow oceans that radically changed the conditions for the life on our planet, enabling the subsequent development of multicellular life forms.