Adding _____ to drinking water is a common practice in many cities, meant to strengthen tooth enamel and decrease dental cavities.
A) iodine
B) fluorine
C) zinc
D) iron
E) oxygen

Question

Quizplus · Accepted Answer

Fluorine, in the form of fluoride, is added to drinking water to help reduce tooth decay and strengthen tooth enamel. This practice is widespread in many cities around the world.

Adding _____ to Drinking Water Is a Common Practice in Many