I am essential for life, yet too much of me can be toxic. What am I?
Category: Science · Difficulty: hard
Hint: Think about what we breathe in.
Answer
Air
Explanation
Oxygen is vital for cellular respiration but can be harmful in high concentrations, leading to oxidative stress and toxicity.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Air.
More Science riddles
- I can be straight or curved, guiding things from point A to point B. What am I?
- I can combine in countless ways, forming everything from water to stars. What am I?
- I am the blueprint of life, composed of segments that can change. What am I?
- What has a shape that can change but always finds its way back to being flat?
- I am the largest living creature but can’t be seen on land. What am I?
- I can be solid or liquid, but I’m often sweet and sticky. What am I?
- What is made of hydrogen and oxygen, but it's not a gas?
- What can you generate by rubbing a balloon on your hair?