Across
- 1. Air pollution resulting from a mixture of smoke and fog.
- 2. Hydraulic fracturing to extract oil or gas from shale rock.
- 7. Gas molecule that protects Earth's surface from UV radiation.
- 8. Solid fossil fuel formed from decayed plant matter.
- 10. Process by which organisms convert food into energy.
- 12. Chemicals used to control pests in agriculture.
- 15. Energy sources that can be replenished naturally.
- 18. Precipitation with high acidity due to pollutants in the atmosphere.
- 19. Resources that cannot be replaced once they are depleted.
- 21. Clearing forests for other land uses, often agriculture or urbanization.
- 23. Emission of ionizing radiation from atomic nuclei.
- 24. Process of soil being worn away by wind or water.
- 26. Energy generated by splitting atoms in a reactor.
- 27. Coal, oil, and natural gas formed from ancient organic matter.
- 29. Symbiotic relationship where both organisms benefit.
Down
- 1. Meeting present needs without compromising future generations.
- 3. Gases that trap heat in the Earth's atmosphere.
- 4. Organic material used as a renewable energy source.
- 5. Large-scale ecosystems characterized by distinct climates and vegetation.
- 6. Variety of life in a particular habitat or ecosystem.
- 9. Power generated from flowing water, often through dams.
- 11. Energy derived from the Earth's internal heat.
- 13. Removing all trees from an area, often done in forestry.
- 14. Artificial watering of land to support agriculture.
- 16. Renewable fuels made from organic materials.
- 17. Process by which plants convert sunlight into energy.
- 20. Gaseous fossil fuel often found alongside oil deposits.
- 22. Depleting fish populations faster than they can replenish.
- 25. Liquid fossil fuel extracted from beneath the Earth's surface.
- 28. Ability to do work, often derived from various sources.