Across
- 6. The process of reusing materials to reduce waste.
- 7. Overflow of water onto normally dry land.
- 9. Unwanted or unusable materials.
- 10. Uncontrolled fires that spread rapidly through forests or grasslands.
- 11. The variety of life in an area, which is reduced by environmental damage.
- 12. The result of rising temperatures at the poles.
- 15. A long period without rainfall.
- 17. Rain made acidic by pollution in the atmosphere.
- 18. A gas layer in the atmosphere that protects Earth from harmful UV rays.
- 20. Wearing away of soil or land by wind or water.
Down
- 1. The rise in Earth’s average temperature due to greenhouse gases.
- 2. Catching fish faster than they can reproduce.
- 3. A fog-like air pollution often found in big cities.
- 4. The removal of large areas of forest for farming or building.
- 5. Leakage of petroleum into the sea or land.
- 8. The presence of harmful substances in air, water, or land.
- 13. Throwing trash in inappropriate places.
- 14. Pollution caused by harmful or poisonous substances.
- 16. A type of gas that traps heat in the atmosphere.
- 19. Gases released into the air by vehicles and factories.