| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | o2 | Scuba diving | Oxygen (O2) is a critical element for respiration and combustion. | 1 |
| 2 | o2 | diving community | Oxygen tanks are crucial for survival in high-altitude or deep-sea environments. | 1 |
| 3 | o2 | scuba diving community | Oxygen (O2) is an essential gas for scuba divers, used in diving tanks for breathing underwater. | 1 |