| Typicality: | 0.691 |
| Saliency: | 0.653 |
| to life | 16 | transitive-object |
| for plant life | 14 | purpose |
| to life on earth | 10 | transitive-object |
| carbon dioxide → be → essential | 43 |
| carbon dioxide → be → important | 15 |
| carbon dioxide → be → vital | 13 |
| carbon dioxide → be → critical | 4 |
| carbon dioxide → be → key | 3 |
| carbon dioxide → be → crucial | 3 |
| negative | neutral | positive |
| 0.150 | 0.572 | 0.278 |
| Raw frequency | 81 |
| Normalized frequency | 0.653 |
| Modifier score | 1.000 |
| Perplexity | 40.066 |