| protect species | 7.57 | Yet it has no law protecting threatened species. | ||
| threaten species | 2.70 | Many species are now threatened. | ||
| preserve species | 2.04 | That helps preserve the species. | ||
| save species | 1.97 | We can save species. | ||
| find species | 1.91 | Five species have been found. | ||
| endanger species | 1.71 | The fin whale species is endangered. | ||
| include species | 1.65 | The area is rich in wildlife, including several species of heron and black howler monkeys. | ||
| list species | 1.38 | The species is listed by the federal government as endangered. | ||
| identify species | 1.05 | Two hundred species have been identified. | ||
| have species | 0.99 | How many species do you have to catalogue? | ||
| use species | 0.79 | This species is used as a medicinal herb in the East. | ||
| create species | 0.66 | Herb Caen created this species by linguistic splicing sometime in the Pleistocene Age. | ||
| help species | 0.66 | What they learn will help endangered species. | ||
| study species | 0.66 | Additional species are being studied. | ||
| kill species | 0.59 | Supporters say nets kill all species indiscriminately. | ||
| affect species | 0.53 | Diseases are unlikely to affect all species the same way. | ||
| bring species | 0.53 | The expert said habitat destruction and hunting had brought some species to the brink of extinction. | ||
| catch species | 0.53 | With a little hustle, five species can be caught. | ||
| discover species | 0.53 | This spring, we discovered another species of palm. | ||
| drive species | 0.53 | This trade may be driving some species to extinction. |