If all members of a species cannot produce offspring then that species will likely become extinct, and avian species are less likely to become extinct if they are common across large ranges. Given these facts, avian species are less likely to end up extinct if they what among the following options:
- single-celled organisms
 - important habitats
 - abandon habitats
 - stop reproducing
 - animals with backbones
 - produce offspring
 - population movement
 - destroy offspring


 

      produce offspring   