| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Human Activity | 211 |
17.6%
|
| 2 | Natural processes | 443 |
36.9%
|
| 3 | Both human activity and natural processes | 86 |
7.2%
|
| 4 | None of these | 7 |
0.6%
|
| 7 | Not applicable | 449 |
37.4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know / Haven’t heard enough | 4 |
0.3%
|