I can be found in your water, your air, and your bones, yet too much of me can be dangerous. Who am I?
Category: Science · Difficulty: medium
Hint: Think about what's added to some dental products.
Answer
Calcium
Explanation
Fluoride is beneficial in small amounts for dental health but can be harmful in excess.
This is a medium science riddle — a moderate challenge for most people. The answer is Calcium.
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