| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| the concentration of carbon dioxide | 0.8 | 0.2 | 6663 | 1 | 35 |
| the | 1.57 | 0.9 | 4779 | 59 | 3 |
| concentration | 1.41 | 0.1 | 5924 | 34 | 13 |
| of | 1.93 | 0.4 | 9762 | 10 | 2 |
| carbon | 1.75 | 0.8 | 9697 | 52 | 6 |
| dioxide | 0.79 | 0.5 | 8288 | 10 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| the concentration of carbon dioxide | 1.52 | 0.6 | 2558 | 30 |
| carbon dioxide concentration in air | 1.67 | 0.5 | 4048 | 6 |
| concentration of carbon dioxide in atmosphere | 1.78 | 0.2 | 1139 | 2 |
| carbon dioxide concentration photosynthesis | 0.52 | 0.4 | 8338 | 68 |
| atmospheric carbon dioxide concentration | 0.21 | 0.2 | 3603 | 53 |
| carbon dioxide concentration graph | 1.89 | 0.3 | 9922 | 50 |
| what is the concentration of carbon dioxide | 0.95 | 0.3 | 9585 | 54 |
| carbon dioxide concentration in air nasa | 0.11 | 0.1 | 6463 | 93 |
| carbon dioxide concentration of normal air | 0.8 | 0.1 | 3937 | 24 |
| proportion of carbon dioxide in air | 0.57 | 0.1 | 2790 | 54 |
| carbon dioxide in the air percentage | 0.32 | 0.4 | 2496 | 31 |
| amount of carbon dioxide in air | 1.5 | 0.6 | 8573 | 14 |
| percent carbon dioxide in air | 0.66 | 0.4 | 5466 | 50 |
| carbon dioxide % in air | 1.37 | 0.9 | 9346 | 50 |
| concentration of co2 in air | 1.1 | 0.6 | 8395 | 4 |
| how much carbon dioxide is in air | 0.95 | 0.6 | 1380 | 84 |
| carbon dioxide atmospheric concentration | 1.68 | 0.2 | 560 | 96 |
| co2 concentration in air percentage | 0.08 | 0.7 | 8320 | 81 |
| normal co2 concentration in air | 1.87 | 0.4 | 631 | 62 |
