Across
- 2. A group of Greeks that influenced their writing system.
- 3. A group of gases that surrounds Earth
- 4. The southern part of Greece.
- 5. Taking satisfaction in going above and beyond.
- 7. A system of symbols.
- 8. A form of oxygen that has three oxygen atoms in the molecule.
Down
- 1. An invisible gas form that is not to be confused with steam.
- 2. A brown haze that forms over populated areas.
- 4. Harmful substances in the air, soil, and water.
- 6. To try and try again.