Across
- 1. Cutting down trees in forests
- 3. All the different kinds of life you'll find in one area
- 5. Pollution of the tmosphere
- 6. Form of precipitation with acidic components
- 7. A prolonged dry period in the natural climate cycle
- 9. A region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation
- 10. The process of converting waste materials into new materials and objects
Down
- 2. That are in danger of extinction
- 4. long-term heating of Earth's surface
- 8. A strong tropical cyclone