Question

Why does your body need both movable and immovable joints

Answer 1

To help the skeletal system. You need moveable joints so we are able to walk and move around. Yet we also need immovable joints so we can stay stabilized

Answer 2

as movable parts so that we can walk....run ...do our jobs.

and immovable joints are there were there is vital organs ...so to protect that.....as in vertebrae...if it moves there will be a great problem !!!