Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
how long have landfills been around | 1.71 | 0.2 | 7920 | 69 |
when did landfills begin | 1.95 | 0.9 | 4875 | 29 |
history of landfills in america | 0.09 | 0.8 | 7340 | 66 |
when did landfills become popular | 1.83 | 0.1 | 4610 | 30 |
when were landfills invented | 0.57 | 0.9 | 5472 | 57 |
how did landfill start | 0.69 | 0.6 | 4330 | 91 |
history of landfill sites | 0.49 | 0.7 | 2405 | 77 |
when was the first landfill | 0.3 | 1 | 4923 | 44 |
when was the first landfill created | 0.75 | 0.7 | 7519 | 97 |
landfills around the world | 0.88 | 0.6 | 8571 | 52 |
landfills in the united states | 0.33 | 0.8 | 6514 | 69 |
history of landfill design | 0.98 | 0.1 | 900 | 5 |
how much of the world is landfill | 0.86 | 0.9 | 3178 | 2 |
number of landfills in the us | 0.59 | 0.2 | 9554 | 95 |
number of landfills in usa | 1.65 | 1 | 5252 | 43 |
history of landfill management | 1.7 | 0.7 | 6829 | 4 |
history of landfill gas | 1.98 | 0.6 | 6258 | 10 |
history of landfill regulations | 1.84 | 0.2 | 7341 | 2 |