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.
A. Diaphragm I took the test and it said the answer was A
Answer:
Remove resident, activate the safety alarm, and contain and extinguish (put out) the fire.
Explanation:
20 teeth
By the time the embryo is eight weeks old, there are ten buds on the upper and lower arches that will eventually become the primary dentition. These teeth will continue to form until they erupt in the mouth.
Witty saying. A quip is a smart remark made back at someone basically