| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | o2 | Athletic training | Oxygen (O2) therapy is used for medical treatment and performance enhancement in athletic training. | 1 |
| 2 | o2 | chemistry | Oxygen (O2) is essential for both respiration and combustion. | 1 |
| 3 | o2 | mountain climbers | Oxygen tanks are essential for survival in high-altitude or deep-sea environments for mountain climbers. | 1 |
| 4 | o2 | scientific community | Oxygen is crucial for respiration and medical treatment within the scientific community. | 1 |