Answer:
It means when 2 bones grow closer to each other and causes pain. This procedure fuses, or “welds,” together the two bones that make up your aching joint. It causes the bones to become one solid bone, and it can lessen your pain.
Explanation:
The answer is evolutionary!
I hope I was able to help. :)
Germs is the microorganism that causes colds most.
There is loads of choices so I could not really tell what the best one is. Although I wouldn't know because I'm a guy so I cant really tell what the best one is. I did look that question up and loads showed up on the right of my screen.
Sorry
