| A | B |
| Extinct | no longer in existence; used to describe subspecies, species, and so on, in which there are no living individuals |
| Endangered | in danger of becoming extinct |
| Deforestation | the destruction of forests |
| Desertification | the process in which desertlike conditions are created where there had been none in the recent past |
| Exotic Species | a species that is not native to a place |
| Wildlife consevaion | the intelligent management of living resources so that they provide the greatest possible benefit for the longest possible time |
| Captive Breeding | the practice of getting animals in zoos to have offspring |
| Mr. Gail | meanest teacher in sixth grade |