Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
co2 levels past 600 million years | 1.58 | 1 | 6262 | 54 |
co2 levels last 600 million years | 0.82 | 0.4 | 6393 | 46 |
co2 levels 65 million years ago | 0.08 | 0.5 | 5669 | 15 |
co2 levels 1 million years ago | 0.23 | 0.8 | 5761 | 60 |
co2 levels past 2000 years | 0.13 | 0.4 | 5415 | 3 |
co2 levels 4 million years ago | 1.01 | 1 | 4154 | 85 |
co2 levels last 1000 years | 1.94 | 0.7 | 5199 | 46 |
co2 levels over the last 200 years | 1.34 | 0.7 | 4537 | 57 |
co2 levels last 10000 years | 1.53 | 0.5 | 6000 | 63 |
co2 levels over the years | 1.99 | 0.4 | 5025 | 72 |
co2 levels last billion years | 1.95 | 0.8 | 8845 | 71 |
co2 levels 20 000 years ago | 0.24 | 1 | 1672 | 42 |
co2 level milions of years | 0.1 | 0.2 | 767 | 93 |