context: The vertebrae consist of 200-400 vertebrae, each of which is articulated by projections that can bend about 25 ° to the left and right and 25-30 ° up and down. Therefore, snakes can be freely bent by winding their catches while bending and releasing long bodies. Each rib is connected to the body scales that folds into the back plate in the back end and the back plate in the middle part, and becomes a driving force for walking.
question: How many bones does a snake have?
answers.text: 200-400