Across
- 2. Oxygen produced by
- 4. Methane from
- 6. NOx and SO2 causes acid
- 9. Let through short
- 10. Total greenhouse gas emissions footprint
- 11. Greenhouse gases maintain earth’s
- 12. Carbon monoxide is
- 14. Particulates cause global
- 16. Climate change causes this sea level
Down
- 1. High temperature produces these oxides
- 3. The fossil fuel impurities form dioxide
- 5. Volcanoes produced water
- 7. first produced oxygen many years ago
- 8. Human activities increase this dioxide
- 10. Early atmosphere mainly this dioxide
- 13. Incomplete combustion gives this monoxide
- 15. Absorb longer wavelength