Across
- 4. a clothing piece which covers a part of your face
- 5. make smaller or less in amount, degree or size
- 7. the weather conditions in an area in general
- 10. the process by which certain plants and organisms use natural resources to create oxygen
- 12. the trapping of the sun's warmt in the planet's lower atmosphere
- 14. a natural fuel such as coal or gas
Down
- 1. energy that is collected from renewable recources that are naturally replenished
- 2. a gas which is produced by burning carbon which is absorbed by plants in photosynthesis
- 3. convert waste into reusable material
- 4. the capital or chief city of a country or region
- 6. a machine which uses the wind to create energy
- 7. a legally recognized subject
- 8. the introduction into the environment of a substance which has harmful or poisonous effects
- 9. energy which is generated by the sun
- 11. use again or more than once
- 13. a four-wheeled road vehicle