Across
- 2. He on the periodic table
- 4. filled with helium
- 6. Li on periodic table, found in batteries
- 7. large body of salt water
- 9. alien found on mars
- 12. university that conducted the experiment on coral
- 13. used to protect skin from the sun
Down
- 1. pale yellow filters found in UVA filters
- 2. U.S. island state
- 3. when color is removed from coral
- 5. name of the rover from mars
- 8. C on the periodic table
- 10. national aeronautics and space administration
- 11. 4th planet from the sun