Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
co2 levels 200 million years ago | 1.72 | 0.1 | 6513 | 24 |
co2 levels in last 600 million years | 1.85 | 1 | 408 | 62 |
co2 levels last 100 million years | 1.34 | 0.1 | 7189 | 4 |
co2 levels for last million years | 0.13 | 0.5 | 3046 | 46 |
co2 levels over the last 200 years | 0.49 | 0.7 | 7253 | 60 |
co2 levels in the last 1000 years | 1.64 | 0.2 | 2951 | 84 |
co2 levels over the last 10000 years | 0.93 | 0.8 | 1228 | 97 |
co2 level higher 100 years ago | 0.73 | 0.6 | 7408 | 80 |
co2 levels past 2000 years | 0.83 | 1 | 6379 | 50 |
co2 levels over time millions of years | 0.32 | 0.2 | 2054 | 76 |
co2 levels over the last 100 years | 1.3 | 1 | 3569 | 14 |