Across
- 2. to continue to never give up in big, difficult challenges.
- 5. harmful substances that are in this air, water, soil.
- 7. the peninsula that forms the southern part of Grease.
- 8. a civilization that lived on the eastern Mediterranean coast and influenced the Greek writing system.
- 9. to have great self-encouragement and will to do your best.
Down
- 1. a form of oxygen with three oxygen atoms in each molecule.
- 2. a brown haze that develops in sunny, populated city.
- 3. a group of gasses that surrounds our planet.
- 4. vapor an invisible gas form, not steam.
- 6. a system of symbols.