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Well I had this question in my homework once and I looked it up on the internet and says that the answer is CARTILAGE.
They are kind of like shock absorbers, and prevent bones from grinding against each other.
The reason there are discs of cartilage between the bones in the vertebral column is because it is to cushion the vertebrae from grinding against each other, which is what happens when arthritis/age sets in, causing the discs of cartilage to erode and letting the vertebrae grind against each other/crush the spinal cord, causing pain and/or paralysis
Night guard-- A removable, custom-fitted plastic appliance that fits between the upper and lower teeth to prevent them from grinding against each other.
cartilage
No If your bones are grinding against each other you really need to go see a bone specialist.
If your spine had no discs, the vertebrae would scrape very painfully against each other. This would be instantly crippling.
Grinding is a style of dance in which people rub their bodies against each other. You can find more information and an example in related links.
synovial fluid
Thoracic vertebrae are attached to a pair of ribs
There is no way to prevent tornadoes or any other type of weather event.
Yes, a penguin has vertebrae as do all other birds.