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6 Cards in this Set
- Front
- Back
- 3rd side (hint)
Composition of the earths atmosphere |
21% oxygen, 78% nitrogen, 1% other |
2_% 7_% 1% |
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Carob on dioxide in the atmosphere |
-trapped as fossil fuels -turns to sedimentary rock |
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When was the Earth formed? |
4500 million years ago |
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Photosynthesis effect on the atmosphere |
Plants replaced CO2 with O2 |
Replaced.... |
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Climate change- CO2 & O2 |
The general trend is that they are both constantly rising and falling |
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Fossil Fuels |
CO2 is a combustion product |
Product? |