I am a gas that can be seen, though I’m invisible by design. I can change the colors of the sky, but you won’t find me in a line. What am I?
Category: Science · Difficulty: medium
Hint: Consider what protects us from the sun's harmful rays.
Answer
Ozone
Explanation
Ozone is a gas that absorbs UV radiation and can cause the sky to appear blue.
This is a medium science riddle — a moderate challenge for most people. The answer is Ozone.
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