title: [Stages in evolution and their origins].
mesh_terms: D000818:Animals; D001272:Atmosphere; D005075:Biological Evolution; D002245:Carbon Dioxide; D002980:Climate; D008280:Magnetics; D010100:Oxygen; D010507:Periodicity; D010944:Plants
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen
vernacular_title: Etapnost' évoliutsii i ee prichiny.