I can ignite with just a spark, yet I am essential for life. What am I?
Category: Science · Difficulty: hard
Hint: Consider what you breathe in and what fire needs.
Answer
Air
Explanation
Oxygen supports combustion and is vital for respiration in living organisms, making it essential for life.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Air.
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