| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what is oxygen composed of | 1.87 | 0.2 | 3622 | 53 |
| air is composed of how much oxygen | 1.37 | 0.6 | 3361 | 74 |
| what percentage of air is composed of oxygen | 0.72 | 1 | 6150 | 46 |
| oxygen composition | 0.12 | 0.9 | 9118 | 61 |
| oxygen composition in air | 0.01 | 0.9 | 1369 | 78 |
| oxygen composed of | 0.08 | 0.2 | 6498 | 55 |
| oxygen composite elements | 1.52 | 0.2 | 1544 | 51 |
| what is oxygen made of elements | 1.29 | 0.4 | 1000 | 46 |
| what is oxygen atoms made of | 0.96 | 0.2 | 5747 | 75 |
| what is in oxygen | 1.22 | 0.1 | 2034 | 62 |
| is oxygen made of molecules | 0.59 | 0.3 | 9757 | 66 |
| chemical composition of oxygen | 1.05 | 0.8 | 9539 | 28 |
