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10 cards from this deck
78% nitrogen, 21% oxygen, 1% trace gases
Average weather of large area over long period
Natural system that absorbs and stores CO₂
-18°C
Carbon dioxide (CO₂)
25 times more potent
97-99%
20%
Refuse,Reduce,Reuse,Recover,Recycle,Repair,Replant,Renew,Rethink
1987 treaty to reduce ozone-destroying substances
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