Across
- 2. - gases that contribute to the greenhouse effect.
- 5. - a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
- 9. - available for one to use
- 10. – unwilling and hesitant.
Down
- 1. - a sudden, dramatic, and important discovery or development.
- 3. – the production and discharge of something (usually gas or radiation).
- 4. - the trapping of the sun's warmth in a planet's lower atmosphere, leading to global warming.
- 6. – prediction.
- 7. - the impact on the environment of human activity in terms of pollution, damage to ecosystems, and the depletion of natural resources.
- 8. - the dying out or extermination of the species.