Across
- 2. convert (waste) into reusable material.
- 4. use carelessly
- 5. a synthetic material
- 6. the strength and vitality required for sustained physical or mental activity.
- 10. the disposal of waste material by burying it
- 13. a colourless, odourless flammable gas
- 14. a very large expanse of sea
- 15. the presence in or introduction into the environment of a substance which has harmful or poisonous effects.
Down
- 1. (of a natural resource or source of energy) not depleted when used.
- 3. the state of the atmosphere at a particular place and time
- 7. the fact or process of a species, family, or other group of animals or plants becoming extinct.
- 8. short for gasoline.
- 9. the weather conditions prevailing in an area in general or over a long period.
- 11. a person who does not eat any food derived from animals and who typically does not use other animal products.
- 12. a distinct compound or substance, especially one which has been artificially prepared or purified.