Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
is helium found in nature | 1.56 | 0.4 | 6948 | 40 |
where is helium found in nature | 0.48 | 0.1 | 2406 | 37 |
where is helium commonly found in nature | 1.73 | 0.7 | 6602 | 15 |
where can helium be found in nature | 1.51 | 0.3 | 8162 | 46 |
in what form is helium found in nature | 1.36 | 0.6 | 3315 | 35 |
can helium be found in nature | 1.14 | 0.6 | 9270 | 73 |