Question

what do you think would have happened if the backbone had only one long bone instead of many small bones
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Answer 1

Explanation:

If the backbone had only one long bone instead of many vertebrae, living beings wouldn't have walked, or bend. It would have been difficult to perform all tasks as backbone maintains and balances the body weight of an individual. It would have been difficult to move.

Answer 2

Explanation:

A single bone cannot bend at its own. ... If backbone were a single bone, there would have been no movement.