C11. Earths Atmosphere Flashcards
1
Q
What % of gases in the Atmosphere?
A
80% Nitrogen, 20% Oxygen and small proportions being Carbon Dioxide, Water Vapour, Noble Gases
2
Q
What are the 5 changes occurred after the early Atmosphere?
A
Oxygen increased, Carbon Dioxide decreased, Methane decreased, Ammonia decreased, Nitrogen increased
3
Q
How did Methane decrese?
A
Methane reacted with the O2 that was being producedby Photosynthesis
