Chemistry of the atmosphere Flashcards
(12 cards)
What was the level of Nitrogen in the early atmosphere
Low
What was the level of Nitrogen in the modern atmosphere?
78%
Why did the level of Nitrogen increase?
Volcanic activity
What was the level of water in the early atmosphere?
HighW
What is the level of water in the modern atmosphere?
Low
Why did the level of water change?
It condensed into oceans
What was the level of Oxygen in the early atmosphere?
Low
What is the level of oxygen in the modern atmosphere?
21%
Why did the level of oxygen change?
Photosynthesis by green algae
What was the level Carbon Dioxide in the early atmosphere?
High
What is the level of Carbon Dioxide in the modern atmosphere
0.04%h
Why did the Carbon Dioxide level change?
It condensed into the ocean.
Got photosynthesised
Trapped in fossil fuels
Sedimentary
