| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what is heavier carbon dioxide or air | 0.18 | 0.6 | 5231 | 43 |
| is carbon dioxide heavier than air | 1.99 | 0.2 | 8603 | 75 |
| carbon dioxide lighter or heavier than air | 0.09 | 0.5 | 5483 | 96 |
| is carbon dioxide gas heavier than air | 1.45 | 0.5 | 4347 | 5 |
| is carbon dioxide heavier than normal air | 0.83 | 1 | 8271 | 77 |
| why is carbon dioxide heavier than air | 0.26 | 1 | 2965 | 55 |
| carbon dioxide co2 is heavier than air | 1.08 | 1 | 3831 | 24 |
