| play significant role | 0.57 |
| provide food | 0.46 |
| lay egg | 0.41 |
| feed on parasite | 0.33 |
| feed on hippo dung | 0.33 |
| meet other requirements | 0.30 |
| return to the water | 0.30 |
| run the world | 0.30 |
| feel pain | 0.25 |
| utilize hemolymph | 0.25 |
| More » |
| vertebral column | 0.33 |
| body | 0.31 |
| a health certificate | 0.25 |
| shell | 0.25 |
| exoskeleton | 0.25 |
| small | 0.60 |
| important | 0.45 |
| symmetrical | 0.43 |
| less abundant | 0.38 |
| sensitive | 0.33 |
| more abundant | 0.32 |
| diverse | 0.30 |
| active | 0.30 |
| less hardy than fish | 0.25 |
| poisonous | 0.23 |
| collected | 0.66 |
| used in toxicity testing | 0.35 |
| preyed on by fish | 0.33 |
| preyed on by cormorant | 0.33 |
| indicated by plus sign | 0.30 |
| kept | 0.28 |
| fed in smaller amounts … | 0.25 |
| adapted to temperature | 0.16 |