| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Human Activity | 692 |
57.7%
|
| 2 | Natural processes | 117 |
9.8%
|
| 3 | Both human activity and natural processes | 32 |
2.7%
|
| 4 | None of these | 0 |
0%
|
| 7 | Not applicable | 336 |
28%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know / Haven’t heard enough | 22 |
1.8%
|