Across
- 5. A lack of water to meet all demands
- 9. a general agreement
- 11. An optimistic theory
- 12. the process of injecting liquid at high pressure into subterranean rocks, boreholes, etc
- 13. consuming something to excess
- 15. Environmental change caused or influenced by human activity
Down
- 1. a person who questions or doubts something
- 2. an act of extracting more of something than is necessary
- 3. a process that occurs when gases in Earth's atmosphere trap the Sun's heat
- 4. the reduction of carbon
- 6. An underground layer that stores water
- 7. The measurement of the ability of surfaces to reflect sunlight
- 8. meeting our own needs without compromising the ability of future generations to meet their own needs
- 10. sources that can't be depleted
- 14. a pessimistic theory