Across
- 4. increase of volume in water
- 5. one of two main greenhouse gases
- 7. underwater current fueled by warm and cold salt water
- 9. when a hemisphere is facing the sun and radiation passes through
- 11. frozen water that forms and melts in the ocean
- 12. gas that absorbs ultraviolet radiation
- 15. contains air we breathe and every aspect
Down
- 1. when glaciers grow and advance
- 2. Climate warms leading glaciers to retreat
- 3. Less dense layer above troposphere
- 6. Ice that forms on land
- 8. a proxy that meausred the past atmosphere of earth
- 10. where daily atmospheric C02 concentrations are meausred
- 13. layer of gases surrounding earth
- 14. earths overall temperature lowers and ice forms