Vertebrates are animals that have a backbone.
Vertebrates generally have a backbone called the spinal column.
Vertebrates are animals that have a spinal column in their skeletal system.
If an animal has a spinal column in their skeletal system what is it called?
Options:
* skeletal animal
* vertebrate
* A Greek letter
* invertebrated
* organ
* critical organs
* spined animal
* epidermal