Invisible currents push and pull, guiding what’s small with force so full. What am I?

Category: Science · Difficulty: expert

Hint: Think about movement driven by concentration differences at tiny scales.

Answer

A molecular diffusion in fluids

Explanation

Molecular diffusion causes particles to move from areas of high concentration to low concentration, creating invisible flows in liquids and gases.

This is a expert science riddle — one of the harder riddles here. The answer is A molecular diffusion in fluids.

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