Why fluorine is often added to drinking water and toothpaste

Fluoride is often added to drinking water to help reduce tooth decay

Also for toothpaste to help prevent tooth decay 

Better Bush

I hope I helped

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As someone said it does reduce tooth decay but also keeps your teeth from a certain substance that is found in lead and stuff

The answer is 65.3312

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy