| like all plants | 5 | other |
| to grow | 3 | purpose |
| for growth | 3 | purpose |
| algae → need → nitrogen | 9 |
| algae → use → nitrogen | 7 |
| algae → require → nitrogen | 3 |
| negative | neutral | positive |
| 0.239 | 0.669 | 0.092 |
| Raw frequency | 19 |
| Normalized frequency | 0.456 |
| Modifier score | 0.500 |
| Perplexity | 245.850 |