I can be predictable or random, yet I always lead to change. What am I?

Category: Science · Difficulty: expert

Hint: Consider a process that changes elements over time.

Answer

Radioactive Decay

Explanation

Radioactive decay is a random process that transforms unstable atomic nuclei into more stable forms.

This is a expert science riddle — one of the harder riddles here. The answer is Radioactive Decay.

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