Q: Fact 1: Wind and rain cause erosion. Fact 2: Soil erosion, or rather soil movement, is a natural process. Given the two facts above, wind and rain can cause what?

Choose your answer from: 1. deforestation. 2. Greenhouse gases. 3. Physical weathering. 4. rainfall. 5. flooding. 6. contamination. 7. Pollution. 8. Soil movement.
A:
8.