Question

our backbone is made up of many vertebrates if it is made up of one single bone ​

Answer 1

Answer:

We loose the flexibility of our backbone and can't move freely

Answer 2

our vertebral column( backbone) is made up of 33 vertebrae which are overlapped on each other. wich help in movementand act as a supporter for body. if it was made up of a single then we could not stretch our body .