Which of the Following Minerals, When Added to Water Supplies

question 25

Multiple Choice

Which of the following minerals, when added to water supplies, is responsible for lowering the rate of dental caries in the United States?

• A) fluoride
• B) selenium
• C) calcium
• D) iodine

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Definitions:

Fossil Fuels

Natural fuels such as coal, oil, and natural gas, formed from the decomposed remains of ancient plants and animals, used for energy.

Minerals

Naturally occurring, inorganic solids with a definite chemical composition and a crystalline structure found in the earth.

Earth Layers

The division of the interior of Earth into layers, including the crust, mantle, outer core, and inner core, based on chemical and physical properties.

Water Vapour

The gaseous phase of water present in the atmosphere, instrumental in the greenhouse effect and weather patterns.