| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| number of cones in eye | 0.28 | 0.5 | 4431 | 40 |
| number of cones in human eye | 1.94 | 0.5 | 4467 | 55 |
| number of cones in retina | 1.84 | 1 | 6184 | 93 |
| number of cones in non luminous flame | 0.78 | 0.6 | 3143 | 20 |
| number of rods and cones in human eye | 1.7 | 0.3 | 6096 | 77 |
| number of types of cones human eyes | 1.54 | 0.4 | 4800 | 23 |
| how many color cones in the eye | 1.45 | 0.1 | 662 | 4 |
| how many cones in retina | 1.09 | 0.1 | 417 | 91 |
| types of cones in eye | 0.77 | 0.1 | 7476 | 89 |
| cones in human eye | 1.38 | 0.3 | 2865 | 62 |
| what are the cones of the eye | 0.31 | 0.2 | 1335 | 96 |
| number of faces of a cone | 1.61 | 0.1 | 8925 | 19 |
| how many cones are there | 1.07 | 0.3 | 3370 | 90 |
| how many cones do humans have | 0.25 | 0.6 | 6055 | 35 |
