Avian species are less likely to end up extinct if they what?
single-celled organisms important habitats abandon habitats stop reproducing animals with backbones produce offspring population movement destroy offspring
A B C D E F G H
Avian species are less likely to become extinct if they are common across large ranges.
Avian species are less likely to end up extinct if they produce offspring. 
Avian species are less likely to end up extinct if they what? (A) single-celled organisms (B) important habitats (C) abandon habitats (D) stop reproducing (E) animals with backbones (F) produce offspring (G) population movement (H) destroy offspring