I can change forms but cannot be created or destroyed; I flow like a river through every living thing. What am I?
Category: Science · Difficulty: expert
Hint: Think about what powers movement and change.
Answer
Energy
Explanation
Energy is conserved in a closed system, transforming from one form to another but never disappearing.
This is a expert science riddle — one of the harder riddles here. The answer is Energy.
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