It's used in toothpaste to prevent tooth decay, and it's sometimes added to water to prevent cavities.
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Ldrs are used in everyday life as solar panels.
To find your way to your destination.
How science a part of your body everyday life
The answer is Physical, Computer, and Idea. These are the types of models. These models can be used in everyday life.
People use science to contemplate asking questions at WikiAnswers.com.