Vertebrates are animals that have a backbone.
All vertebrates have a backbone or vertebral column.
Vertebrates are animals that have a vertebral column.
Vertebrates are animals that have what?

[a] major threat to health
[b] the digestive system
[c] characteristics
[d] a three chambered heart
[e] moving bones and joints
[f] scales on their skin
[g] a vertebrate column
[h] aerobic capacity