Earth's atmosphere

?
How much Oxygen is there in today's atmosphere?
21%
1 of 7
At the start of the atmosphere what caused their to be some much carbon dioxide?
Volcanic Activity
2 of 7
what killed off early organisms?
build up of oxygen
3 of 7
How did oceans form?
water vapour condensing
4 of 7
How much carbon dioxide is in todays atmosphere?
0.03%
5 of 7
How much argon is in today's atmosphere?
1%
6 of 7
What started to evolve 2.7 billion years ago?
simple organisms
7 of 7

Other cards in this set

Card 2

Front

At the start of the atmosphere what caused their to be some much carbon dioxide?

Back

Volcanic Activity

Card 3

Front

what killed off early organisms?

Back

Preview of the front of card 3

Card 4

Front

How did oceans form?

Back

Preview of the front of card 4

Card 5

Front

How much carbon dioxide is in todays atmosphere?

Back

Preview of the front of card 5
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