A bunch of nerves that are connected to your spine also connect to your brain and sends it the info we need and sends out other information throughout your body
In some cases yes. Kids tend to learn faster than the average toddler.
Well if you already have the silver stuff on your tooth the only way to get it out is if your tooth falls out or if the stuff scrapes off...or you could just lower the amount of sugar intake you have.
Hope I could help!!