I’m made of cells and can live in extreme places, but I’m too small to see. What am I?

Category: Science · Difficulty: easy

Hint: I play a big role in ecosystems.

Answer

Microbe

Explanation

Microbes are tiny organisms essential for many ecological processes, despite their size.

This is an easy science riddle — a good one for children and beginners. The answer is Microbe.

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