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Same as why a human has a backbone. We need it to keep our body straight and to move properly, and so do they.
To keep you standing up straight and to protect your spinal cord.
Business is the backbone of society because it drives the economy. People need to spend money to keep the economy flowing and to keep people employed,
Your backbone may not be straight because you have scoliosis. This could also be caused by an accident or even an injury.
The backbone protects your spinal nerve and helps keep all the upper body structures and organs in place. And obviously helps your body to stay straight and your head to be where it is.
Benefits of having a backbone is when you have a backbone you automaticaly learn to stand up straight and run very fast
Makes you sit up straight.
You need to straighten them with a flatiron. It is the only way to get your bangs to stay straight.
The three kinds of carbon backbones are straight chain,branched chain,and the ring.
You need to just keep knitting straight. Until it says to change and if it was a good pattern it would say for how many rows to knit straight for.
so the arrow will spin and fly straight. P.S. it makes it fly farther.
because animals need backbone