Across
- 6. A brown haze that can develop in sunny citys.
- 7. A government the only elect their leaders.
- 9. The twin brother of Romulus.
- 10. A hero of the Trojan war.
Down
- 1. A group of gases the surround are plant.
- 2. A popular story that can not be proven.
- 3. A hero who found Rome.
- 4. Harmful substance that is in the air.
- 5. A gas form of matter.
- 8. A form of oxygen that has three oxygen atoms.