| Value | Category |
|---|---|
| 1 | No |
| 2 | Seldom |
| 3 | Some times |
| 4 | Very often |
| var_concept.title | Vocabulary |
|---|---|
| The presence of contaminants or pollutant substances in the air that do not disperse properly and that interfere with human health or welfare. | Air pollution |
| Audible sound from traffic, construction, and so on that may generate unpleasant and harmful effects ( hearing loss). It is measured in decibels. | Noise |