I am a gas that can make you cry, yet I aid in your breath. What am I?
Category: Science · Difficulty: expert
Hint: Think about what you inhale and the reactions it can cause.
Answer
Oxygen
Explanation
Oxygen is essential for respiration but can lead to tears when it reacts with certain chemicals.
This is a expert science riddle — one of the harder riddles here. The answer is Oxygen.
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