The earth's atmosphere
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10 Terms
1
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What is the earth’s atmosphere like now (4)?
↳ Nitrogen- 78%
↳ Oxygen- 21%
↳ Carbon dioxide- 0.04%
↳ Others- 1%
2
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Why does the earth’s early atmophere have limited evidence?
↳ 4.6 billion years ago (believed to be like mars or venus)
3
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Why did nitrogen increase?
↳ Volcanic activity
4
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Why did water vapour decrease?
↳ Condensed into oceans
5
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Why did oxygen increase?
↳ Algae photosynthesizing
6
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Why did carbon dioxide decrease (3)?
↳ Algae photosynthesizing
↳ Dissolved into oceans
↳ Formed sedementary rocks
7
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What is carbon monoxide
↳ Toxic gas that kills
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What does sulfur dioxide cause?
↳ Acid rain
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What does nitrogen oxide cause?
↳ Respiratory problems
10
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What does particulates cause?
↳ Global dimming
Note 
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