I build structures without a plan, I can create complexity from simplicity, I work in shadows. What am I?
Category: Science · Difficulty: hard
Hint: Consider the arrangement of living organisms.
Answer
Nature's ecosystems
Explanation
Nature's ecosystems form complex structures without a central plan, creating balance and diversity.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Nature's ecosystems.
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