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

Question

Quizplus · Accepted Answer

Fluoride is commonly added to drinking water in many cities as it helps to strengthen tooth enamel and decrease dental cavities. Iodine is added to salt, not water, to prevent iodine deficiency disorders. Zinc and iron are essential minerals but are not added to drinking water. Oxygen is naturally occurring and does not need to be added to water.

Adding _____ to Drinking Water Is a Common Practice in Many