I can illuminate a room without a plug or a battery. What phenomenon am I?
Category: Science · Difficulty: medium
Hint: Think about creatures that glow in the dark.
Answer
Bioluminescence
Explanation
Bioluminescence is the natural emission of light by living organisms, often seen in deep-sea creatures.
This is a medium science riddle — a moderate challenge for most people. The answer is Bioluminescence.
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