I am vital for life but too much of me can be deadly. I breathe in and out, yet I’m not alive. What am I?
Category: Science · Difficulty: medium
Hint: Think about what we need to breathe.
Answer
Oxygen
Explanation
Oxygen is essential for life but can be dangerous in high concentrations. It’s the gas we breathe in.
This is a medium science riddle — a moderate challenge for most people. The answer is Oxygen.
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