Elite Era Knowledge
What are the names of the eras that the slide presentation just went over that are associated with creating enviornments suitable for sustaining life?
Hadean and Archean era
Liquid water and a stable environment
According to the slides, which era is associated with the departure of lighter elements?
Hadean era
Which era has similarities regarding to atmospheric composition in comparison to now?
Archean era, nitrogen and oxygen dominate
Give two aspects of both the primary and secondary atmosphere of the Hadean era
primary: not oxygen rich, hydrogen and helium from accretion
secondary: bombardments, volcanic eruptions
What organism consumed CO2?
Methanogens
How long/what times were the Hadean era and the Archean era?
Archean: 3.8-2.8 Gya
Hadean: 4.5-3.8 Gya
Where did most of the CO2 go?
In the primitive oceans
Which era had an accumulation of oxygen?
Archean
Why did the Archean and Hadean indicate create the foundations of life
climate alterations that progressed into stable enviornments and formation of liquid water