I am a cycle that never ends, turning matter into energy and back again. What am I?
Category: Science · Difficulty: expert
Hint: Think about how plants create their food.
Answer
Photosynthesis
Explanation
Photosynthesis converts solar energy into chemical energy, cycling carbon and oxygen in the process.
This is a expert science riddle — one of the harder riddles here. The answer is Photosynthesis.
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