the atmosphere
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?- Created by: Samantha.Jacobson
- Created on: 07-12-15 10:19
Other questions in this quiz
2. Where did the oceans come from?
- From volcanoes
- As the atmosphere cooled below 100oC, steam condensed
- From plants
3. What formed the early atmosphere?
- volatile compounds and elements released from molten rock.
- plants
- rock
4. Which gas is present in the atmosphere in the greatest amount?
- nitrogen
- oxygen
- carbon dioxide
5. Which gas makes up approximately 21% of the atmopshere?
- oxygen
- argon
- hydrogen
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