'Hadean' diaporamas de présentation

Origins of water, atmosphere, life

Origins of water, atmosphere, life. outline. Age of the earth The Hadean Oldest rocks & water Early atmosphere & earliest fossils Oxygenated atmosphere and life. PHANEROZOIC. Ray Troll. PRE- CAMBRIAN. PRE- CAMBRIAN. SODA!. Phanero. 0.5. Proterozoic. 2.5. Archean. 4. Hadean.

416 views • 29 slides

History of Earth Timeline

History of Earth Timeline. 4.6 bya to Present. The Hadean Eon. From the Greek word Hades referring to the hellish conditions on early earth 4.6 bya to 4.0 bya. Formation of the Earth.

1.31k views • 20 slides

SCIENCE NEWS

SCIENCE NEWS . Google wants to buy, sell electricity in US http:// news.yahoo.com/s/afp/20100108/tc_afp/usitinternetcompanygoogleelectricity Experts: Cold snap doesn't disprove global warming http :// news.yahoo.com/s/ap/20100107/ap_on_sc/sci_big_chill. What do you think? .

331 views • 19 slides

106 views • 10 slides

118 views • 10 slides