C1 - Air Quality (Percentage of Gases in the Atmosphere) 0.0 / 5 ? ChemistryAir QualityGCSEOCR Created by: Former MemberCreated on: 12-04-14 17:51 634251 Across 1. 1%-4% (5, 6) 4. 1% (5) 5. 21% (6) Down 2. 78% (8) 3. The Earth is surrounded by a mixture of gases called... (10) 6. 0.04% (6, 7)
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