Vertebrate chordates have a backbone.
Chordates chordates chordates include fish, amphibians, reptiles, birds, and mammals.
Fish, amphibians, reptiles, birds, and mammals have a backbone.
fish, amphibians, reptiles, birds, and mammals have what?

A. food
B. fur and fat
C. backbone
D. power
E. four limbs
F. retina
G. vision
H. competition