I exist without breathing, yet I can shift the landscape, nourishing life without a heartbeat. What am I?
Category: Science · Difficulty: hard
Hint: Think about how water shapes ecosystems.
Answer
A river's flow
Explanation
The flow of a river shapes environments and sustains ecosystems, all without the need for respiration.
This is a hard science riddle — a tricky one that takes a little thought. The answer is A river's flow.
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