| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | sulfur dioxide | Europe | Sulfur dioxide emissions are regulated due to their contribution to air pollution and acid rain. | 1 |
| 2 | sulfur dioxide | Europe | Considered a harmful air pollutant, regulated to reduce environmental impact | 1 |
| 3 | sulphur | Europe | Commonly used in the production of gunpowder and as a component in matches | 1 |