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15 cards from this deck
Mixture of gases surrounding Earth
78%
21%
0.93%
0.04%
Nitrogen
Essential for respiration in plants & animals
Chemically inert (noble gas)
Greenhouse gas that traps heat
Over 40%
Greenhouse gas (trace gas)
Decreases at higher altitudes
99%
Filters harmful solar radiation
-18°C (vs current +15°C)
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