Across
- 1. Extra increase in the temperature of the Earth
- 4. Fuels formed by decomposition of animal and plant matter
- 5. Layer of atmosphere that protects us from UV radiation
- 8. Change of liquid into vapors
- 9. Converting waste into reusable objects
- 10. To use again
Down
- 2. Presence of carbon-dioxide and some other gases in air causes this
- 3. Presence in the environment of substance which has a harmful effect
- 6. Organic fertilizer obtained from biodegradable waste
- 7. Treating food to prevent its spoilage or decay