I am the spark of innovation, often found in small amounts, yet essential for growth. What am I?
Category: Science · Difficulty: hard
Hint: Think about essential substances required in minute quantities.
Answer
A trace element
Explanation
A trace element is a chemical element whose concentration is very low in a given environment and is essential for various biological functions.
This is a hard science riddle — a tricky one that takes a little thought. The answer is A trace element.
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