Across
- 1. particles per million stands for?
- 6. the level of the sea
- 7. the process of removing forest
- 8. the things we put out into the air usually from a combustion type engine or burning
- 9. gasoline
- 10. sustainable energy, example such as solar power or wind power
Down
- 2. limiting something
- 3. the things we put out into the atmosphere from our cars or combustion engines
- 4. short term climate of an area
- 5. the temperature and precipitation over a long period of time