The Atmosphere 5.0 / 5 based on 1 rating ? ChemistryThe earth and its atmosphereGCSEOCR Created by: FranFewster98Created on: 01-04-15 16:46 72564103189 Across 1. 5th layer of the atmosphere (9) 5. As the Earth cooled down, most of this condensed and formed the oceans (5, 6) 6. The Earth is 21% what gas? (6) 7. 4th layer of the atmosphere (12) 8. 1st layer of the atmosphere (11) 9. Which gas has reduced dramatically since the Earth was created? (6, 7) Down 2. 2nd layer of the atmosphere (12) 3. 3rd layer of the atmosphere (10) 4. The Earth is 78% what gas? (8) 10. What process removed Carbon Dioxide from the atmosphere? (14)
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