CUIZ-FACT-65AD6DCE
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Science
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What is the hardest natural substance on Earth?
Verified Answer
Steel
Quiz Options
- Steel
- Granite
- Diamond
- Quartz
Explanation & Context
Diamond is the hardest known natural material, scoring a 10 on the Mohs scale of hardness.
Also Asked As / Semantic Queries
"Which is the hardest natural substance on Earth?"
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