| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what chemicals make up dna | 1.67 | 0.7 | 8439 | 45 |
| how many different chemicals make up dna | 1.79 | 0.7 | 767 | 99 |
| what are the four chemicals that make up dna | 0.88 | 0.7 | 7377 | 14 |
| how many chemicals make up dna | 1.67 | 0.7 | 5992 | 14 |
| what chemicals make up the rungs of dna | 1.09 | 0.9 | 1741 | 16 |
| what chemicals make up the backbone of dna | 0.68 | 0.7 | 8581 | 75 |
| what are the 4 chemicals that make up dna | 1.55 | 0.1 | 4594 | 13 |
| chemicals that make up dna | 1.53 | 0.3 | 1157 | 48 |
| what chemicals make up the sides of dna | 1.36 | 0.8 | 4265 | 48 |
