For youth it's 35 feet for older its 40 feet
The brown stuff is called plaque. This forms on your teeth when you eat and its something you can't get rid of. There is tooth paste that can help maintain it.
Have healthy relationships and give positive reinforcement, love, and attention to their children. They set a good example of what a healthy relationship is
It means that you are willing to put aside your own needs for someone else, and their happiness
