Across
- 2. when rocks breaks down through chemical changes
- 5. secretes weak acid that dissolves rock
- 7. CO2 dissolved with water creates carbonic acid
- 9. when rocks physically break into pieces
- 12. Caused by pollution
- 13. oxygen combines with iron bearings material to rust
- 14. wearing down of material
Down
- 1. a material full of tiny connected air ways that all water to seep through
- 3. pressure released causing the rock to break and peel
- 4. transporting the weather material
- 6. animals dig holes splitting the rock apart
- 7. the weather in a certain region
- 8. wearing away of rock particles
- 10. chemical reaction of water and other substances
- 11. water seeps through cracks of rock,freezes,expands, and splits rock