| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what is the waste gas we breathe out called | 1.33 | 0.4 | 4464 | 100 |
| a gas plants breathe out is called | 0.02 | 0.1 | 7410 | 40 |
| waste gas given off by the body | 1.12 | 0.6 | 9050 | 38 |
| waste gas produced in respiration | 0.5 | 0.2 | 1412 | 23 |
| what is waste gas | 0.78 | 0.9 | 99 | 96 |
| what gas do we breathe out | 1.48 | 1 | 8946 | 14 |
| the gaseous waste product of respiration is | 0.2 | 1 | 9923 | 82 |
| what waste gas do humans excrete | 0.21 | 0.3 | 8771 | 94 |
| what gas is given off by respiration | 0.37 | 0.1 | 9987 | 45 |
| name one waste product of respiration | 1.39 | 0.9 | 219 | 89 |
| waste of breath meaning | 0.61 | 1 | 5199 | 46 |
| name a waste gas produced by cells | 0.36 | 0.9 | 6201 | 71 |
| what is plant breathing called | 1.47 | 0.9 | 4364 | 50 |
