Chemistry of the atmosphere Flashcards
1
Q
What percentage of gases make up the earths atmosphere today
A
21% oxygen and 78% nitrogen and a trace of other gases and co2
2
Q
What gases made up the earths early atmosphere
A
mainly co2 and some other gases
3
Q
what reduced the amount of co2 in the earths atmosphere
A
green algae and plants evolve through photosynthisis and in sedimentary rocks
4
Q
How did the evoloution of plants effect the amount of oxygen in our atmosphere
A
Increased as oxygen is given pout in photosynthisis
5
Q
How did co2 and other gases make up the early atmosphere
A
Volcanic eruptions released them
