| to understanding | 14 | purpose |
| to biology | 10 | transitive-object |
| for biology | 6 | transitive-object |
| evolution → be → important | 28 |
| evolution → be → the key | 15 |
| evolution → be → essential | 14 |
| evolution → be → key | 12 |
| evolution → be → vital | 8 |
| evolution → be → critical | 5 |
| evolution → be → crucial | 4 |
| evolution → be → important issue | 3 |
| negative | neutral | positive |
| 0.099 | 0.524 | 0.377 |
| Raw frequency | 89 |
| Normalized frequency | 0.557 |
| Modifier score | 0.550 |
| Perplexity | 24.563 |