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→Earth's Atmosphere
| style="height:20px; width:200px; text-align:center;" |A [[Pie Chart]] showing the percentage of different [[gas]]s in the '''Earth's Atmosphere'''.
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: The '''Earth's Atmosphere''' has not always had the same proportions of [[gas]]es. In the last 200 years humans have caused the [[Carbon Dioxide]] in the '''Earth's Atmosphere''' to double.